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The condition for a line y = 2x + c to t...

The condition for a line `y = 2x + c` to touch the circle `x^(2) + y^(2) = 16` is...

A

c= 10

B

`c^(2) = 80`

C

c = 12

D

`c^(2) = 64`

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The correct Answer is:
B
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