In the following items, some parts of the sentence have been jumbled up. You are required to re-arrange these parts which are labelled P, Q, R and S to produce the correct sentence. Choose the proper sequence and mark in your Answer Sheet accordingly.
`("When the artist had started")/P ("singing a popular song")/Q ("in chorus")/R ("everyone in the audience joined.")/S`
The correct sequence should be

Options

A. RPQS
B. PQRS
C. PQSR
D. RQPS