In the following items, cach passage consists of six sentences. The first sentence `(S_1)` and the final scntence `(S_6)` are given in the beginning. The middle four sentences in each have been removed and jumbled up. These are labelled P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark accordingly on the Answer Sheet.
`S_1` : The carth was initially very hot and without an atmosphere.
`S_6` : But it contained a lot of other gases that are poisonous to us.
P: The atmosphere caine from the cmmission of gases from the rocks.
Q: Because it contained no oxygen
R: In the course of time it cooled and acquired an atmosphere.
S: This carly atmosphere was not ong in which we could have survived.
The proper sequence should be

Options

A. RPSQ
B. PSRO
C. SPOR
D. QRPS