The Numbers of Fledged Young of Female Swamp Sparrows of Different

The numbers of fledged young of female swamp sparrows of different sizes were assayed and are presented in the table. Assume that body size is at least partially heritable.What is the most likely response to selection in population A?

A) Body size would increase.
B) Body size would decrease.
C) Body size would stay more or less the same, but the variance would increase.
D) Body size would stay more or less the same, but the variance would decrease.
E) None of the above; there is no selection occuring.