`A_n` is the `n`th term in a sequence.

Which one of the following expressions does not define a geometric sequence?

A. `A_(n + 1) = n` |
`\ \ \ \ A_0 = 1` |

B. `A_(n + 1) = 4` |
`\ \ \ \ A_0 = 4` |

C. `A_(n + 1) = A_n + A_n` |
`\ \ \ \ A_0 = 3` |

D. `A_(n + 1) = –A_n` |
`\ \ \ \ A_0 = 5` |

E. `A_(n + 1) = 4A_n` |
`\ \ \ \ A_0 = 2` |