Which of the Experiments Described Below Would Provide the BEST

Which of the experiments described below would provide the BEST data set with which to test the hypothesis that female chimpanzees have a greater influence on the vertical transmission of culture than males?

A) Measure the amount of time that young chimps spend with each of their parents, and measure the rate at which they acquire cultural traits.
B) Measure the amount of time young chimps spend with their mother only, and measure the rate at which they acquire cultural traits.
C) Measure the amount of time young chimps spend with their father only, and measure the rate at which they acquire cultural traits.
D) Train a wild chimp to use a new food source, and document how quickly this knowledge spreads to the rest of the population.
E) Introduce a new food source to a population and see which chimps learn how to use it first.