Which statement is a specific example of how artificial selection is used in society?
A.
The nucleus of a cow's skin cell is inserted into an egg cell from a female cow.
B.
Genes are spliced from a bacterial cell and inserted into a cell of an apple tree.
C.
Pesticides applied to beetles yield a pesticide-resistant population of beetles.
D.
Two racehorses with desirable traits are bred to produce a superior racing horse.