Directions: The following passage consists of six sentences. The first and sixth sentences are given in the beginning as S1 and S2, respectively. The middle four sentences in each have been jumbled up. These are labelled P, Q, R and S. You are required to find out the proper sequence of the four sentences and indicate your answer accordingly.
S1: When you are born, you are toothless. S2: After a certain age though, these permanent kind of teeth start to fall off as well. P: Every human being gets two sets of teeth which means that the first set is merely milk teeth, which completes its task within a few years and falls off. Q: These teeth then keep on supporting the need of biting, chewing and such for the rest of the life. R: Then the set of teeth that emerges is of the permanent kind. S: After spending a few months on Earth, you start to gain these appendages.