Sentence Correction

Corporate finance committees do not plan the detailed activities of the various divisions in a large firm, but by their allocation of investment funds they make strategic judgements as to where the firm should expand.

a) by their allocation of investment funds they make strategic judgements as to where the firm should expand
b) when they allocate investment funds, they make strategic judgements about where the firm might be expanding
c) they make strategic judgements on where the firm should expand when they allocate investment funds
d) by allocating investment funds, they will make strategic judgements about where the firm might be expanding
e) allocations of investments fund as to where the firm should expand are their exercise in strategic judgement

OA : A

even though the oa is A, i would've thought c...

someone explain please!