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A straight line L passing through the po...

A straight line L passing through the point `P(-2,-3)` cuts the lines, `x + 3y = 9` and `x+y+1=0` at Q and R respectively. If `(PQ) (PR) = 20` then the slope line L can be
(A) 4
(B) 1
(C) 2
(D) 3

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