The following question consists of six sentences of a passage. The first and the sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly.S1: There is no doubt that the rules governing imports, manufacture and the use of pesticides need to be further tightened up.S6: At the same time, better pollution control measures are needed to check the discharge of poisonous gases and chemicals by a host of other industries which are equally responsible for poisoning our world.P: But a more practical and feasible approach is required to tackle this problem.Q: No one can deny the importance of pesticides in our agriculture.R: The proposed amendment is an attempt at doing this, but in the process, it seems to have gone overboard in most cases.S: Even today, nearly a fourth of our crop is lost due to pests and weeds.The proper sequence should be

• A. R P S Q
• B. R Q S P
• C. Q S P R
• D. P R S Q