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In a ` A B C` if `D\ a n d\ E` are mid-points of `B C\ a n d\ A D` respectively such that `a r\ ( A E C)=4\ c m^2` , then `a r\ ( B E C)=`
(b) `4\ c m^2`
(b) `6\ c m^2`
(c) `8\ c m^2`
(d) `12 c m^2`

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