The set of points in an Argand diagram which satisfy both \( |z| \leq 4 \) and \( 0 \leq \arg (z...

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The set of points in an Argand diagram which satisfy both \( |z| \leq 4 \) and \( 0 \leq \arg (z) \leq \frac{\pi}{3} \), is
(a) a circle and a line
(b) a radius of a circle
(c) a sector of a circle
(d) an infinite part line
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