If the straight line L=3x+4y-k=0 cuts th...

If the straight line `L=3x+4y-k=0` cuts the line segment joining the points P(2,-1) and Q(1,1) in the ratio 4:1 , then the equation of the line parallel to the line y=x and concurrent with the lines PQ and L =0 is

A

`2x-2y+7=0`

B

`x-y+1=0`

C

`5x-5y-3=0`

D

`y=x+3`

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The correct Answer is:

C

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