Which Statement Explains How the Lack of Dopamine Physiologically Affects

Multiple Choice

Which statement explains how the lack of dopamine physiologically affects those individuals suffering from Parkinson disease?

A) Without dopamine, the excitatory effects of acetylcholine are not restrained, thus postural muscles are overstimulated.
B) Without dopamine, the excitatory effects of acetylcholine are inhibited, thus relaxing postural muscles.
C) Without dopamine, the inhibitory effects of acetylcholine are not restrained, thus postural muscles are overstimulated.
D) Without dopamine, the inhibitory effects of acetylcholine are restrained, thus relaxing postural muscles.