Let −−→ O A = → a , −−→ O B = 12 → a + 4 → b O A → = a → , O B → = 12 a → + 4 b → and −−→ O C = → b O C → = b → , where O O is the origin. If S S is the parallelogram with adjacent sides O A O A and O C O C , then area of the quadrilateral O A B C area of S area of the quadrilateral O A B C area of S is equal to
(1) 6
(2) 10
(3) 7
(4) 8