Inputs A and B of the given figure are applied to a NAND gate. The output is LOW-A-from 0 to 6B-from 0 to 2C-from 0 to 1 and 2 to 3D-from 1 to 2 and 3 to 4-C-from 0 to 1 and 2 to 3

C from 0 to 1 and 2 to 3 NAND gate gives Low output if all inputs are High. For other combinations of inputs, output is High.