In the adjoining figure, $$P$$ is the centre of the first circle, which touches the other circle in $$C$$. $$PCD$$ is along the diameter of the second circle. $$\angle PBA = 20^\circ$$ and $$\angle PCA = 30^\circ$$.
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The tangents at $$B$$ and $$D$$ meet at $$E$$. The measure of the angle $$x$$ is

A

$$75\%$$

B

$$80\%$$

C

$$70\%$$

D

$$85\%$$