Here is a premise:
The proposal in the Postal Service's petition would have established Negotiated Service Agreements as a new form of mail classification, with individual agreements to be reviewed by the Commission within 60 days.

Here is a hypothesis:
The Postal Service's petition makes a new mail classification for bulk mail

Here are the options: Choices:
(A). yes
(B). it is not possible to tell
(C). no
Is it possible to conclude that if the premise is true, then so is the hypothesis?
(B).