In the following sentences, some parts of the sentences have been jumbled up. You are requried to rearrange these parts which are labelled P, Q, R, S to produce the correct sentence. Choose the proper sequence and mark in your answer sheet accordingly
`("up to the end of the eighteenth century, not only because it was often fatal")/P ("smallpox was a particularly dreaded disease")/Q, ("but also because those who recovered")/R, ("were permanently disfigured")/S`
The correct sequence should be.

Options

A. P QR S
B. QR SP
C. PR SQ
D. QPR S