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The paralelism condition for two straigh...

The paralelism condition for two straight lines one of which is speciified by the equation `ax+ by+ c=0,` the other being represented parmetrically by `x= alpha t + beta, y= gamma t + delta` is given by

A

`alpha gamma - b alpha =0, beta = delat = c =0`

B

`a alpha - b gamma =0, beta = delta =0`

C

`a alpha + b gamma =0`

D

` a gamma = b alpha =0`

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The correct Answer is:
C
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