The line y=m x+1 is a tangent to the ...

The line `y=m x+1` is a tangent to the curve `y^2=4x` , if the value of `m` is (a) 1 (b) 2 (c) 3 (d) 1/2

A

`1/2`

B

1

C

2

D

3

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The correct Answer is:

B

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