Most of the Neurons in the Basal Ganglia Are Inhibitory

Most of the neurons in the basal ganglia are inhibitory. How can an inhibitory synapse be involved in generating a movement?

A) Inhibitory action potentials are converted to excitatory action potentials when they arrive at the neuromuscular junction.
B) Inhibition of a tonically active inhibitory neuron results in disinhibition of its target neuron.
C) Muscle fibers receive the inhibitory input and convert it into excitatory input.
D) Inhibiting other motor pathways automatically excites the relevant motor pathway.