An impulse is travelling along an axon. It reaches a synapse, what happens next?

A. The impulse jumps the gap to the dendrite of the next neuron and continues on its way

B. Neurotransmitters are released into the synapse, which bind to the next neuron, generating an impulse in that neuron

C. Dopamine is released into the synapse, which binds to the next neuron, generating an impulse in that neuron

D. The impulse waits while the next neuron prepares itself to receive the signal