Here is a premise:
Postal administrations, however, are often under constraints that limit their ability to respond to such pressure.

Here is a hypothesis:
Postal administrations have constraints on their budgets and staffing.

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