Each of the following questions in this section consists of a sentence, the parts of which have been jumbled. These parts have been labelled P, Q, R and S. Given below each sentence are four sequences namely (a), (b), (c) and (d). You are required to re-arrange the jumbled parts of the sentence and select the correct sequence.
Coming late, `("lest")/P ("he should disturb the class ")/Q ("John tiptoed into the room")/R ("which was going on seriously")/S`
The correct sequence should be

Options

A. PQRS
B. RSPQ
C. QSPR
D. RPQS