2020 Fermat Problem 14

In Rad's garden there are exactly 30 red roses, exactly 19 yellow roses, and no other roses. How many of the yellow roses does Rad need to remove so that \frac{2}{7} of the roses in the garden are yellow?

\textbf{(A)}\ 5\quad \textbf{(B)}\ 6\quad \textbf{(C)}\ 4\quad \textbf{(D)}\ 8\quad \textbf{(E)}\ 7

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Full credit to this problem is given to the CEMC, you may view all Fermat contests here.