If 8a = 9b and ab ≠0, what is the ratio of a/9 to b/8?	Options
A) 64 / 81 B) 8 / 9 C) 1 D) 9 / 8 E) 81 / 64

Rationale: "if ab ≠ 0 then a and b has two integer sets of pair if a = 9 then b = 8 and if a = - 9 then b = - 8 also in fraction if a = 1 / 8 then b = 1 / 9 any of the pair we check the ratio 8 a / 9 b = 1 answer : c"
Answer: C