See the multi-choice question below:

Sentence 1: Zaillian is at his most assured when he cuts back and forth between Facher's Harvard Law School lectures on what not to do in court and Schlichtmann's fumbling prosecution.

Sentence 2: Zallian stays intensely focused on one topic.

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