Ordering of Sentences - Verbal and Reasoning

Directions to SolveIn questions below, each passage consist of six sentences. The first and sixth sentence are given in the begining. The middle four sentences in each have been removed and jumbled up. These are labelled as P, Q, R and S. Find out the proper order for the four sentences.
Q1:

S1: I had halted on the road.
P : As soon as I saw the elephant I knew I should not shoot him.
Q : It is a serious matter to shoot a working elephant.
R : I knew that his 'must' was already passing off.
S : The elephant was standing 8 yards from the road.
S6: I decided to watch him for a while and then go home.
The Proper sequence should be:

A SPQR

B PQSR

C RQPS

D SRPQ

ANS:B - PQSR

No answer description is available.