Darby has a very high-energy dog named Lily. Lily's parents were both very energetic dogs. Darby trains Lily to chase a tennis ball when she throws it and to bring it back. Lily can play fetch for hours and is always ready for a game. How has Lily's behavior been influenced by her heredity?
A. Lily inherited her high energy level from her parents.
B. Lily inherited her identification of the tennis ball from her parents.
C. Lily inherited her relationship with Darby from her parents.
D. Lily inherited her knowledge of fetch from her parents.