really really tough answer
First of all I saw the list of all idioms on this board in excel format and I didn't find it.
Secondly i have searched on different site and nothing
Yet, i have found this
Use Except Correctly:
Use except as a preposition to mean excluding or but. "Everyone went to the party except Jonathan."
Use as a conjunction to mean only, or with the exception, often followed by the word "that." "The twins are identical except that one has longer hair than the other."
Use as an idiom to mean "if it weren't for" something. "Sandra would go back to college except for lack of time and money."
Use as a verb to mean to exclude or leave out, or to object. "Let's except that item from the list."
I picked B for POE (not so far away, indeed)...........
KUDOS is the good manner to help the entire community.