From January 1, 2015, to January 1, 2017, the number of people enrolled in health maintenance organizations increased by 5 percent. The enrollment on January 1, 2017, was 45 million. How many million people, to the nearest million, were enrolled in health maintenance organizations on January 1, 2015 ?  Choices:
A) 38
B) 39
C) 40
D) 41
E) 43

Rationale: "soln : - 5 x = 45 - - > 21 / 20 * x = 45 - - > x = 45 * 20 / 21 = 300 / 7 = ~ 43 . answer : e ."
Answer: E