At a Conference, Sydney Dials Reception from Her Room to Be

At a conference, Sydney dials reception from her room to be connected to Eric whenever she wants to talk to him. Later, in Kelly's room, Kelly wants to talk to Travis, and Sydney dials reception for her to connect to Travis. While there, Sydney learns to dial Travis' and Eric's extensions directly. When she is back in her room, Sydney is going to use Eric's direct extension because

A) R-O associations direct her to do so.
B) S-O associations guide her responses.
C) Travis has been revalued.
D) Eric has acquired a new incentive value for Sydney.