Students at a school were on average 180 cm tall. The average female height was 170 cm, and the average male height was 184 cms. What was the ratio D of men to women?  Choose the correct option
A) 5 : 2
B) 5 : 1
C) 4 : 3
D) 4 : 1
E) 3 : 1

Rationale: ( a ) d = 184 x 5 + 170 x 2 = 1260 . a
Answer: A