If the segment intercepted by the parabola \[y=4ax\]with the line \[lx+my+n=0\] subtends a right angle at the vertex, then

If the segment intercepted by the parabola \[y=4ax\]with the line \[lx

1.	If the segment intercepted by the parabola \[y=4ax\]with the line \[lx+my+n=0\] subtends a right angle at the vertex, then
A.	\[4al+n=0\]
B.	\[4al+4am+n=0\]
C.	\[4am+n=0\]
D.	\[al+n=0\]
Answer» B. \[4al+4am+n=0\]

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If the segment intercepted by the parabola \[y=4ax\]with the line \[lx+my+n=0\] subtends a right angle at the vertex, then

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