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"P" be a point on the ellipse (x^(2))/(9...

"P" be a point on the ellipse `(x^(2))/(9)+(y^(2))/(4)=1` .Let the line passing through "P" and parallel to "y" -axis meet the circle `x^(2)+y^(2)=9` at point "Q" such that "P" and "Q" are on the same side of the "x" -axis.Then,the eccentricity of the locus of the point "R" on "PQ" such that `PR:RQ=4:3` as "P" moves on the ellipse,is:

A

`11/19

B

`sqrt139/23`

C

`sqrt13/7`

D

`13/21`

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