A4. How many degrees is angle $x$?
(A) $16^{\circ}$
(B) $82^{\circ}$
(C) $98^{\circ}$
(D) $164^{\circ}$
(E) $328^{\circ}$
A4. The inscribed angle $x$ is subtended by an arc whose central angle measures $360^{\circ}-164^{\circ}$, so it measures half of the angle $196^{\circ}$, which is $98^{\circ}$.