See the multi-choice question below:

Sentence 1: (After all, Scheck earns a pittance compared with what he could if he were a full-time criminal defense attorney.)

Sentence 2: Scheck would earn much more if he were a defense attorney full-time.

If the first sentence is true, then is the second sentence true?
Choose your answer from: A). yes; B). it is not possible to tell; C). no;
A).