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Let A=((1,0,0),(2,1,0),(3,2,1)). If u(1)...

Let `A=((1,0,0),(2,1,0),(3,2,1))`. If `u_(1)` and `u_(2)` are column matrices such that `Au_(1)=((1),(0),(0))` and `Au_(2)=((0),(1),(0))`, then `u_(1)+u_(2)` is equal to :

A

`[(-1),(1),(0)]`

B

`[(-1),(1),(-1)]`

C

`[(-1),(-1),(0)]`

D

`[(1),(-1),(-1)]`

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The correct Answer is:
D
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