On my sister's birthday, she was 132 cm in height, having grown 10% since the year before. How tall was she the previous year?
Choices
A) 130 cm B) 126 cm C) 120 cm D) 116 cm E) 112 cm

Rationale: "let the previous year ' s height be x . 1.1 x = 132 x = 120 the answer is c ."
Answer: C