A Certain Fish-Eating Hawk That Lives by Large Lakes Can

A certain fish-eating hawk that lives by large lakes can capture more pounds of fish per unit time if it were to hunt farther from shore instead of staying close to the shoreline. The hawk, however, does stay close to the shoreline. This demonstrates that

A) natural selection theory is probably not applicable in this case.
B) optimal foraging theory is probably not applicable in this case.
C) an optimal foraging hypothesis based on maximizing caloric intake alone is probably incorrect in this case.
D) the fish species found close to the shoreline in large lakes are more nutritious than those in the center.