Here is a premise:
In this review, GAO was provided thousands of documents including copies of e-mails and other information identifying group membersa contacts with outside groups and individuals.

Here is a hypothesis:
GAO had been withheld from information so they were unable to identify contacts with outside groups or individuals.

Here are the options: Select from the following.
(1). yes;
(2). it is not possible to tell;
(3). no;
Is it possible to conclude that if the premise is true, then so is the hypothesis?
(3).