The J.C.Penney chain of retail stores broke with its conservative cash-and-carry policy during its 1958 reorganization for deciding to sell on credit.

A. during its 1958 reorganization for deciding to sell
B. for the decision at its 1958 reorganization to sell
C. when it was reorganized in 1958 for its decision to sell
D. in deciding during its reorganization in 1958 to sell
E. by deciding at its reorganization in 1958 on the selling of

Answer: C
Reason:
1) A: Reorganization didn't happen so that they can decide. It happens because of that decision."For Deciding"
is implying that they reorganize so that they can decide.
2) B: "Decision to sell" is a correct idiom.
4) and 5) have nonsensically used -ing form for the past tense.