Research on Memory and Learning Has Found That

Research on memory and learning has found that

A) appetitive USs are remembered better than aversive USs.
B) with the passage of time, subjects are more likely to respond to stimuli that are different from the original CS.
C) with the passage of time, subjects are less likely to respond to stimuli that are different from the original US.
D) with the passage of time, subjects are more likely to respond to inhibitory than to excitatory stimuli.