Following graph shows atmospheric pressure, gauge pressure and absolute pressure.
Then, choose the correct option.
(a) p1 = gauge pressure, p2 = atmospheric pressure, p3 = absolute pressure
(b) p1 = atmospheric pressure, p2 = gauge pressure, p3 = absolute pressure
(c) p1 = absolute pressure, p2 = atmospheric pressure, p3 = gauge pressure
(d) p1 = gauge pressure, p2 = absolute pressure, p3 = atmospheric pressure