According to Manhattan Gmat Sentence Correction
Guide page 70 - The answer B for this question is wrong.... The guide says the following sentence is wrong: Her company
is outperforming those
of her competitors... It explains this by saying that acc to Gmat, the 'new copy' created by the words 'that' or 'those' must agree in number with the previous version
You're right: The 'new copy' needs to agree in number with the previous version.
And, I initially thought the answer was going to be C. But take a closer look, specifically at the highlighted parts:
"The New York Yankees are Major League Baseball's most expensive franchise, with an annual player payroll in excess of
$250 million dollars, more than
the 5 least expensive teams in the league combined. "
The Yankees' payroll is a value that isn't an exact, whole value --- instead, the payroll is a value that's increasing (and we don't know to what extent ... ), meaning OVER the stated amount.
When referring to this excess value in the 2nd clause, we can't use "that." We have to use "those" when referencing the combined amount (because this too, is unspecified).
(B) more than those of --- The Correct Answer
: "Those" properly identifies the "excess valuation" (since we don't know exactly how much money it is)
(C) more than that of ---- My initial Choice, until I realized that it wasn't just $250 Million dollars. The payroll is "in excess of" (meaning OVER), so the pronoun "that" is incorrect.
(D) which is more than ------- Which can't modify "dollars" --- in this case, dollars isn't a whole value, it's value that's changeable
--- If it were ONLY $250 million dollars (meaning one, 'solid' value) then "which" would work.
(E) which is more than that of ------ Same reasoning for Choice D.