See the multi-choice question below:

Sentence 1: Two years after Ca'daan had ceased his own brill trade north, choosing to sell south twice a year, his neighbor and his neighbor's sons lost an entire herd of six brill off of Heaven's Highway.

Sentence 2: He was jealous of his neighbor's massive success.

If the first sentence is true, then is the second sentence true?
Options:
a). yes.
b). it is not possible to tell.
c). no.
c).