Q 3073823746.     Andrew has taken `5` of the `8` equally weighted tests in his U.S. Maths class this semester, and he has an average score of exactly `78.0` points. How many points does he need to earn on the `6^{th}` test to bring his average score up to exactly `80.0` points?

A

`90`

B

`88`

C

`82`

D

`80`

E

`79`

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