The output of a gate is 1 if and only if all the inputs of that gate are high, what is that gate?

The output of a gate is 1 if and only if all the inputs of that gate a

1.	The output of a gate is 1 if and only if all the inputs of that gate are high, what is that gate?
A.	NOT
B.	NAND
C.	NOR
D.	AND
Answer» E.