Genetic Variation That Affects a Hypothetical Complex Trait Has the Property

Multiple Choice

Genetic variation that affects a hypothetical complex trait has the property that 1/2 of the genes have a relative effect of size 1, 1/4 of the genes have a relative effect of size 2, 1/8 of the genes have a relative effect of size 3, and the remaining 1/8 of the genes have a relative effect of size 4. What is the average relative effect size of the genes?

A) 9/8
B) 11/8
C) 13/8
D) 15/8
E) 17/8