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The line y = x + 1 meets the ellipse x^2...

The line y = x + 1 meets the ellipse `x^2/4 +y^2/2=1` at two points P and Q. If r is the radius of the circle with PQ as diameter then `(3r)^2` is equal to :

A

20

B

12

C

11

D

8

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