Which Statement Is TRUE

Which statement is TRUE?

A) Only primary reinforcers trigger dopamine release in the ventral tegmental area/substantia nigra pars compacta.
B) Animals will continue to work for electrical brain stimulation if dopamine transmission is blocked.
C) Dopamine seems to be involved in liking, rather than wanting, a reinforcer.
D) A trained animal will reduce its response rate if dopamine transmission is blocked.