Hi

Bunuel,

Can you please see, if my explanation is approach was correct.

Statement: -1 Clearly Insufficient.

Statement: The range of Set S is 41, this is insufficient because lets say:

If smallest integer is -4 and biggest integer is 37, then Range is 41 and answer is Yes.

But if smallest integer is -1 and biggest integer is 40, then Range is 41 and answer is No.

C, removes the first case thus sufficient.