0 is correct. AND(bit1,bit2) returns 1 if and only if both input bits are 1. AND'ing each bit of the two numbers yields only 0 bits: 10000 &01111 _____

0 is correct. AND(bit1,bit2) returns 1 if and only if both input bits are 1. AND'ing each bit of the two numbers yields only 0 bits: 10000 &01111 ______ 00000