Suppose That One Premise of a Disjunctive Syllogism Is "My

Multiple Choice

Suppose that one premise of a disjunctive syllogism is "My book is not in my bag" and the conclusion is "I left my book at the library." What is the unstated premise?

A) My book is in my bag.
B) I didn't leave my book at the library.
C) My book is in my bag or I left my book at the library.
D) My book is not in my bag or I didn't leave my book at the library.
E) If I left my book at the library, then my book is not in my bag.