Let C be the circle with centre (0, 0) a...

Let C be the circle with centre (0, 0) and radius 3 units. The equation of the locus of the mid-points of the chords of the circle C that subtend an angle of `(2pi)/(3)` at its centre is ....

A

`x^(2)+y^(2)=(32)/(7)`

B

`x^(2)+y^(2)=7`

C

`x^(2)+y^(2)+30x+7=0`

D

`x^(2)+y^(2)=(9)/(4)`

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