Plot the point \(\left(5, \frac{5x}{4}\right)\) given in polar coordinates, and find other polar coordinates \((r, \theta)\) of the point for which the following are true.
\((a) r > 0, -2\pi \le \theta < 0\)
\((b) r < 0, 0 \le \theta < 2\pi\)
\((c) r > 0, 2\pi \le \theta < 4\pi\)
Select the graph that represents the point \(\left(5, \frac{5x}{4}\right)\)