In the following item, passage consists of six sentences. The first and sixth sentence are given in the beginning as `S_1` and `S_6`. 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 on the Answer Sheet.
`S_1` : We who live in the present day world are proud to call ourselves civilized.
`S_6` : In fact science has added to our worries.
P : But let us search our hearts and ask ourselves, 'Has science solved our problem ?
Q : Is it because we live and dress better than our forefathers ?
R : Frankly speaking, the answer is 'No',
S: Of course, we have the advantages of the inventions of science which our ancestors had never known.
The proper sequence should be : (a) PQRS (b) QSPR (c) PRSQ (d) SPRQ

Options

A. PQRS
B. QSPR
C. PRSQ
D. SPRQ