If We Have a Distribution That Tells Us What Percentage

If we have a distribution that tells us what percentage of the members of S belong to each of the mutually exclusive classes N, O, P, Q, and R, is that enough information to calculate the ratio of N and R?

A) No, because we don't know the actual number of members in N and R.
B) No, because we could not isolate N and R from their relations to O, P, and Q.
C) No, because we know how S relates to N and how S relates to R, but not how N and R relate to each other.
D) Yes, because how they relate to S tells us enough about how they relate to each other.
E) Yes, because since they both relate to S, they will necessarily have a 1 to 1 ratio.