For what values (s) of a will the two po...

For what values (s) of a will the two points (1,a,1) and (-3,0,a) lie on opposite sides of the plane `3x + 4y - 12z + 13=0` ?

A

`a lt -1 or a gt 1//3`

B

`a =0` only

C

`0 lt a lt 1`

D

` -1 lt a lt 1`

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The correct Answer is:

A

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