Which Statement About Synapses Is True

Which statement about synapses is true?

A) Synapses are uniform in size, transmitter release, and probability of action potential during an action potential.
B) Synapses vary widely in size, transmitter release, and probability of action potential during an action potential.
C) The most prevalent synapses in the brain are axoaxonic synapses.
D) In the rodent hippocampal synapses, a large amount of neurotransmitter is released when neurons fire.