Select the incorrect statement regarding synapses :

1. A. Electrical current can flow directly from one neuron into the other across the electrical synapse.
2. B. Chemical synapses use neurotransmitters
3. C. Impulse transmission across a chemical synapse is always faster than that across an electrical synapse.
4. D. The membranes of presynaptic and postsynaptic neurons are in close proximity in an electrical synapse.

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