Acquired Equivalence Will Most Likely Take Place When Two Stimuli

Multiple Choice

Acquired equivalence will most likely take place when two stimuli

A) are associated with different but equally appealing stimuli (e.g., cookies, chocolate milk) .
B) are in the same stimulus dimension (e.g., both are tones) and are associated with different stimuli.
C) are associated with the same stimulus (e.g., light  shock, tone  shock) .
D) are used as the S^D and S^Δ in one discrimination (e.g., red +, green -) , and then reversed in the next discrimination (red -, green +) .