12 times a positive integer is more than its square by 36, then the positive integer is  Choose the correct choice from the following:
A) 6
B) 10
C) 11
D) 12
E) 14

Rationale: "explanation : let the number be x . then , 12 x = x 2 + 36 = > x 2 - 12 x + 36 = 0 = > ( x - 6 ) ( x - 6 ) = 0 = > x = 6 answer : a"
Answer: A