Four inputs A, B, C, D are fed to a NOR gate. The output of NOR gate is fed to an inverter. The output of inverter is

Four inputs A, B, C, D are fed to a NOR gate. The output of NOR gate i

1.	Four inputs A, B, C, D are fed to a NOR gate. The output of NOR gate is fed to an inverter. The output of inverter is
A.	A + B + C + D
B.	A + B + C + D
C.	ABCD
D.	ABCD
Answer» B. A + B + C + D