From Left to Right, Indicate Whether the Transmitter-Gated Channels for (1)

Short Answer

From left to right, indicate whether the transmitter-gated channels for (1) calcium, (2) chloride, (3) potassium, and (4) sodium at a chemical synapse usually open in response to excitatory (E) or inhibitory (I) neurotransmitters. Your answer would be a four-letter string composed of letters E and I only, e.g. EEIE.