Given the Following Enthymeme: Suzanne Must Be Smart

Multiple Choice

Given the following enthymeme: Suzanne must be smart. After all, she earns 'A's.
The statement needed to convert the enthymeme into a valid syllogism is:

A) Not all Suzanne's grades are 'A's. (Premise)
B) Suzanne is a smart student. (Conclusion)
C) Every smart student earns 'A's. (Premise)
D) Suzanne will graduate with honors. (Conclusion)
E) Anyone who earns 'A's is smart. (Premise)