A contour line joins locations having the same height above the mean sea level. The following is a contour plot of a geographical region. Contour lines are shown at $25$m intervals in this plot. If in a flood, the water level rises to $525$m, which of the villages $P, Q, R, S, T$ get submerged?
1. $P, Q$
2. $P, Q, T$
3. $R, S, T$
4. $Q, R, S$