The side of a square is increased by 30% then how much % does its area increases?  Choose the correct answer:  A) 52.65  B) 69  C) 50.75  D) 42.75  E) 52.75

Rationale: "a = 100 a 2 = 10000 a = 130 a 2 = 16900 - - - - - - - - - - - - - - - - 10000 - - - - - - - - - 6900 100 - - - - - - - ? = > 69 % answer : b"
Answer: B