If the tangents at P and Q on a parabola meet in T, Then SP, ST and SQ

1.	If the tangents at P and Q on a parabola meet in T, Then SP, ST and SQ are in
A.	A.P
B.	GP.
C.	H.P.
D.	None of these
Answer» C. H.P.

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If the tangents at P and Q on a parabola meet in T, Then SP, ST and SQ are in

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