E7A09

What logical operation is performed by a two-input exclusive NOR gate?

1. AIt produces a 0 at its output only if all inputs are 0
2. BIt produces a 1 at its output only if all inputs are 1
3. CIt produces a 0 at its output if one and only one of its inputs is 1
4. DIt produces a 1 at its output if one and only one input is 1

Pick an answer to check it.