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The base BC of a triangle ABC is bisecte...

The base BC of a triangle ABC is bisected at the point (p,q) and the equations to the sides AB and AC are `px +qy = 1` and `qx +py = 1`. The equation of the median through A is

A

`(p-2q)x+(q-2p)y+1=0`

B

`(p+q)(x+y)-2=0`

C

`(2pq-1)(px+qy-1)=(p^(2)+q^(2)-1)(qx+py-1)`

D

None of these

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A
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