The product of a and b is equal to 11 more than twice the sum of a and b. If b = 5, what is the value of b - a?	Choices.
A) - 2	B) 5	C) 7	D) 24	E) 35

Rationale: "ab = 11 + 2 ( a + b ) 5 a = 11 + 2 a + 10 3 a = 21 a = 7 b - a = 5 - 7 = - 2 a is the answer"
Answer: A