When a Parental Generation Undergoes Stabilizing Selection, How Will the Distribution

Multiple Choice

When a parental generation undergoes stabilizing selection, how will the distribution of phenotypes in the population change between the parental generation and their progeny?

A) Mean phenotype increases, but variability decreases.
B) Mean phenotype stays the same, but variability decreases.
C) Mean phenotype stays the same, but variability increases.
D) Mean phenotype and variability both increase.