The compound ratio of 5:8, 3:2 and 4:5? Choose the correct choice from the following answers
A) 1 : 1  B) 1 : 87  C) 3 : 4  D) 1 : 9  E) 1 : 2

Rationale: "5 / 8 * 3 / 2 * 4 / 5 = 3 / 4 1 : 1 answer : c"
Answer: C