Some parts of the sentence have been jumbled up. You are required to rearrange these parts which are labelled P,Q,R and S to produce the correct sentence . Choose the proper sequence and mark in accordingly.
I sat down `("this morning")/(P)` , `("to write an article")/(Q)`, `("but found")/(R )`, `("I could make no progress")/(S)`
The correct sequence should be

Options

A. SPRQ
B. QRPS
C. QPRS
D. RSQP