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# An Inscribed Triangle

SATMAT-GX1KJO

If $\overline { CB }$ is a diameter in circle $D$, and $\triangle ABC$ is inscribed in circle $D$ in the figure above, then what is the value of $x$?

A

${ 17.5 }^{ \circ }$

B

${ 20 }^{ \circ }$

C

${ 35 }^{ \circ }$

D

${ 40 }^{ \circ }$