In a group of ducks and cows, the total number of legs are 12 more than twice the no. of heads. Find the total no.of buffaloes.  Choose the correct answer:	A) 6	B) 8	C) 10	D) 4	E) 12

Rationale: "let the number of buffaloes be x and the number of ducks be y = > 4 x + 2 y = 2 ( x + y ) + 12 = > 2 x = 12 = > x = 6 a"
Answer: A