In the following item, there is a sentence of which some parts have been jumbled up. You are required to rearrange these parts which are labeled P, Q, R and S, to produce the correct sentence. Choose the correct sequence and mark in your answer sheet accordingly.
The practice of taking performance-boosting drugs among athletes (P) but checking it is not going to be easy (Q) is generally conceded to be unfair (R) of the detection technology (S) for the user is generally one jump ahead.
The proper sequence should be : (a) RSPQ (b) QPSR (c) QPRS (d) PQRS

Options

A. RSPQ
B. QPSR
C. QPRS
D. PQRS