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

If lines `x+2y-1=0,a x+y+3=0,` and `b x-y+2=0` are concurrent, and `S` is the curve denoting the locus of `(a , b)` , then the least distance of `S` from the origin is (a)`5/(sqrt(57))` (b) `5/sqrt(51)` (c)`5/sqrt(58)` (d) `5/sqrt(59)`

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If lines x+2y-1=0,a x+y+3=0, and b x-y+2=0 are concurrent, and S is the curve denoting the locus of (a , b) , then the least distance of S from the origin is 5/(sqrt(57)) (b) 5//sqrt(51) 5//sqrt(58) (d) 5//sqrt(59)

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