2. Which logic gate has the following truth table: output is 1 only if inputs are different? (A) AND (B) OR (C) NAND (D) XOR (E) XNOR

9.In 8-bit two's-complement arithmetic, adding 0x73 + 0x94 raises the overflow flag because: (A) Signs differ but result is negative (B) Both operands are positive but result is negative (C) Carry-in to MSB = carry-out from MSB (D) Parity bit = 0 (E) Half-carry occurred