In the following question, there are six sentences marked S1, S6, P, Q, R, S. The positions of S1 and S6 are fixed. You are required to choose one of the four alternatives which would be the most logical sequence of the sentence in the passage.

S1. Smoke oozed up between the planks.

P : Passengers were told to be ready to quit the ship.

Q : The rising gale fanned the shouldering fire.

R : Every one now knew there was a fire on board.

S : Flames broke out here and there.

S6. Most people bore the shock bravely.