Difficult
The line $y = mx + c$ intersects the circle $x^2 + y^2 = r^2$ at two real distinct points,if
- A$ - r\sqrt{1 + m^2} < c < r\sqrt{1 + m^2}$
- B$c^2 < r^2(1 + m^2)$
- CBoth $(a)$ and $(b)$
- D$c^2 > r^2(1 + m^2)$
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