A number is doubled and 9 is added. If resultant is trebled, it becomes 63. What is that number	Choose the correct choice from the following options:	A) 6	B) 10	C) 12	D) 14	E) 15

Rationale: "explanation : = > 3 ( 2 x + 9 ) = 63 = > 2 x + 9 = 21 = > x = 6 answer : option a"
Answer: A