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Two circles intersect each other at the points A and B, A straight line parallel to AB intersects the circles at C, D, E and F. If CD = 4.5 cm, then the measure of EF is

A

`6sqrt(3)cm^(2)`

B

`9sqrt(3)cm^(2)`

C

`(9)/(2)sqrt(3)cm^(2)`

D

`8sqrt(3)cm^(2)`

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