What is the ratio of y to x if (x + 3y) / ( x - y) = 5/4?  Choose the correct choice from the following options.
A) -15/4
B) -5/3
C) 1/17
D) 3/5
E) 15/1
Solving for y/x gives, 1/17 (1/17)
<result>C</result>
What is the ratio of y to x if (x + 3y) / ( x - y) = 5/4?