The condition that the line lx + my + n = 0 becomes a tangent to the ellipse \(\dfrac{x^2}{a^2} + \dfrac{y^2}{b^2}=1\), is

The condition that the line lx + my + n = 0 becomes a tangent to the e

1.	The condition that the line lx + my + n = 0 becomes a tangent to the ellipse \(\dfrac{x^2}{a^2} + \dfrac{y^2}{b^2}=1\), is
A.	\(a^2l + b^2 m + n = 0\)
B.	\(al^2 + bm^2 = n^2\)
C.	al + bm = n
D.	\(a^2l^2 + b^2 m^2 = n^2\)
Answer» E.