This question consists of four sentences of a passage. The four sentences have been jumbled up and labelled as P, Q, R and S. Rearrange the sentences and choose the correct option.

P: Literature makes use of words that are sounds. 

Q: Music, like literature, is an art that deals with sound.

R: And the writer must be concerned with the effect produced by the sounds he uses.

S: But the words are not only sound. They also have meanings.