According to the following truth table, choose the expression of standard POS. ABC x 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 1 0 0 0 1 0 1 1 1 100 1 1 1 0 O x = (A+B+C) (A+B+C)(A+B+C)(A+B+C) O x = (A+B+C)(A+B+C) (A+B+C) (A+B+C) X = (A+B+C) (A+B+C)(A+B+C) (A+B+C) (A+B+C) O x = (A + B+C) (A+B+C)(A+B+C)(A+B+C)(A+B+C)