A certain dog kennel houses only collies, labs, and golden retrievers. If the ratio of collies to labs is $5{:}9,$

A certain dog kennel houses only collies, labs, and golden retrievers. If the ratio of collies to labs is $5{:}9,$ there are $66$ golden retrievers, and $12$ more golden retrievers than labs in the kennel, what percent of the dogs in the kennel are collies?

A. $5\%$
B. $9\%$
C. $12\%$
D. $20\%$
E. $25\%$

The OA is D

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