If Sheldon Writes a Paper, Then Using the Copier Is

Multiple Choice

If Sheldon writes a paper, then using the copier is a necessary condition for Yessenia reading it. Yessenia doesn't read it only if Sheldon doesn't write it. So, if Sheldon writes a paper, then he uses the copier.
-Consider assuming 'S' for conditional proof. Which of the following propositions is an immediate (one-step) consequence in PL of the given premises with that further assumption for conditional proof?

A) Y ⊃ C
B) S ⊃ Y
C) Y ⊃ S
D) Options A, B, and C
E) Options A and B, but not option C