Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) All animals have a nervous system.
B) All animals sense and respond to the environment.
C) It is necessary to have a nervous system to sense and respond to the environment.
D) All animals have a nervous system and it is necessary to have a nervous system to sense and respond to the environment, but not all animals sense and respond to the environment.
E) All animals have a nervous system, all animals sense and respond to the environment, and it is necessary to have a nervous system to sense and respond to the environment.