The rock pocket mouse (Chaetidipus intermedia) is a species of rodent commonly found in the desert of Mexico and the southwestern United States. Suppose a population of rock pocket mice lives in an area of rocky terrain. The graph below show the distribution of body sizes within the population at the time the mice began to live among the rocks. Overtime, mice with smaller bodies were better able to hide from predators than larger mice. Based on this information, which of the following graphs shows the most likely distribution of body sizes within the current population of rock pocket mice?