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Bunuel
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Bunuel
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I think this is a poor-quality question and the explanation isn't clear enough, please elaborate. Why can't I use the past perfect version (had been) here?
it is not wordy.
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presence of the word "before" makes use of past perfect tense optional.
but using past perfect does not make it a wrong ans choice.
I have seen the same scenario in few question earlier and the one with the past perfect ans was the correct choice.

Is my understanding correct? Experts please help.
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presence of the word "before" makes use of past perfect tense optional.
but using past perfect does not make it a wrong ans choice.
I have seen the same scenario in few question earlier and the one with the past perfect ans was the correct choice.

Is my understanding correct? Experts please help.

Some GMAT trainers insist that presence of "before" makes the use of past perfect redundant (not optional) - however even considering your point valid, the simple past would be better than past perfect because of concision.
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sayantanc2k
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I think this is a poor-quality question and the explanation isn't clear enough, please elaborate. Why can't I use the past perfect version (had been) here?
it is not wordy.

Use of past perfect alongwith "before" is redundant.
Example:
Correct: I finished (simple past) my homework before my father came home.
Correct: I had finished (past perfect) my homework when my father came home.

Observe "before" at the beginning of the sentence: the prior incidence therefore should be in simple past, not in past perfect.

Hats off to sayantanc2k for this explanation!! Absolutely correct!! I think even I had read it somewhere (maybe MGMAT) that when there are two events, we need some kind of a time marker to denote which event occurred first. Past Perfect is one such marker, not the only marker. If the sentence has any other time marker, then we do not need to stick to the Past Perfect thumb-rule. In this example, "before" is a time marker than clearly indicates which event occurred first. So another time marker "had been" will be redundant. , Although I agree with mvictor that GMAT will never ask a question as direct as this one, but this is really a high-quality question for practice purpose.
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The question or/and solution has been revised and edited. Thank you sayantanc2k !!!
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