Four people P, Q, R and S have to sit on the four stools marked 1, 2, 3 and 4.
P goes and sits down on stool 4. Q does not want to sit on a stool that is immediately next to P's. Keeping this in mind, in how many different ways could Q, R and S arrange themselves on the remaining stools?
A) 6
B) 4
C) 3
D) 2