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The planes ax+4y+z=0,2y+3z-1=0 and 3x-bz...

The planes `ax+4y+z=0,2y+3z-1=0` and `3x-bz+2=0` will

A

meet at a point if `ab ne 15`.

B

meet on a line if ab =15, a=3

C

have no common point if ab=15, `a ne 3`.

D

have no common point if ab=15, `ane5`

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A, B, C
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