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A line is tangent to a circle if the len...

A line is tangent to a circle if the length of perpendicular from the centre of the circle to the line is equal to the radius of the circle. If `4l^2 - 5m^2 + 6l + 1 = 0`, then the line `lx + my + 1=0` touches a fixed circle whose centre. (A) Lies on x-axis (B) lies on yl-axis (C) is origin (D) none of these

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