Which of the following statements about neural networks is not true?

A$)$ Software programs and mathematical models perform the function of biological neurons in a neural network.

B$)$ Neural networks are pattern detection programs.

C$)$ Facial recognition is an example of a neural network application.

D$)$ The strength of the connections between neurons in a neural network cannot be altered.

E$)$ Humans can train a neural network by feeding it a set of outcomes they want the system to learn.