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Let M be the foot of the altitude drawn ...

Let M be the foot of the altitude drawn from the vertex B to side AC of `Delta ABC` whose vertices are A(1,-2,2)B(1,4,0)C(-4,1,1) then `bar(BM)=`

A

`(1 , 4)

B

(-1 ,3)

C

(-2 , 4)

D

(-1 , 4)

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The correct Answer is:
D
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