The magnitude Bode plot of a network is shown in the figure

The maximum phase angle $\phi _m$ and the corresponding gain $G_m$ respectively, are

1. $-30^0$ and $1.73$ $dB$
2. $-30^0$ and $477$ $dB$
3. $+30^0$ and $4.77$ $dB$
4. $+30^0$ and $1.73$ $dB$

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