The lines 2 x+y-1=0, a x+3 y-3=0 and 3 x...

The lines `2 x+y-1=0, a x+3 y-3=0` and `3 x+2 y-2=0` are concurrent

A

for all a

B

for a=4 only

C

for `-1 le a le 3`

D

for `a gt 0` only

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The correct Answer is:

A

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