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.
If you buy the economy pack `("the manufacturers, wanting to promote the sales")/(P)` `("which is quite cheap")/(Q)` `("have devised a number of schemes")/(R )` `("and to ensure clearance of stocks")/(S)`
The correct sequence should be

Options

A. QPSR
B. PQRS
C. RSQP
D. QRSP