Directions: Each of the following items in this section consists of a sentence, parts of which have been jumbled. These parts have been labelled as P, Q, R and S. Given below each sentence has four sequences, namely (a), (b), (c) and (d). You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly.

She opened the ancient book (P) / and the air filled with a peculiar scent (Q) / as the pages rustled (R) / unveiling its secrets (S).