Computer Science for IGCSE & O level - Boolean Logic (Section 4 - No. 40)

Which gate will produce the output 1 if input A=0 and input B=0?

NAND gate

NOR gate

OR gate

AND gate

NAND gate inverts the output of an AND gate, with output 0 for inputs A=0 and B=0, the output of NAND is 1