Which formula correctly expresses p' under selection given p, q, and fitnesses w_AA, w_Aa, w_aa?

• A. p' = [p^2 w_AA + p q w_Aa] / Wbar where Wbar = p^2 w_AA + 2 p q w_Aa + q^2 w_aa.
• B. p' = p^2 w_AA / Wbar
• C. p' = p + q
• D. p' = p w_AA / (p w_AA + q w_aa)

Answer: (A)