Which of the Following Is an Example of How Farmers

Which of the following is an example of how farmers typically use genetics and heredity?

A) Breeding fast horses to each other to produce fast offspring.
B) Breeding high-yield corn plants together to produce higher yields.
C) Cross-breeding drought resistant and disease resistant wheat varieties to produce one type that can resist both.
D) Only allowing the cows that produce the most milk to also produce offspring.
E) All of the above
4) 4