If a + b + c + d = 4 then the value of 1 + 1 + 1 + 1 is (1 a)(1 b)(1 c)(1 b)(1 c)(1 d)(1 c)(1 d)(1 a)(1 d)(1 a)(1 b)

• A. 0
• B. 1
• C. 4
• D. 1+ abcd