PT 63 S1 Q21

On the Discount Phoneline, any domestic long-distanceP.M. costs 15 cents ... ...

The pattern of reasoning in which one of the following arguments is most similar to that in the argument above?
(A) If a university class involves extensive lab work, the class will be conducted in a laboratory; otherwise, it will be conducted in a normal classroom. Thus, if a university class does not involve extensive lab work, it will not be conducted in a laboratory.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in June 2011 LSAT (PT 63): Logical Reasoning A