S1:tI took cigarettes from my case.P :tBut when the fit of coughing was over, he replaced it between his lips.Q :tI lit one of them and placed it between the lips.R :tThen with a feeble hand he removed the cigarette.S :tSlowly he took a pull at it and coughed violently.S6:tThen he continues to draw on it.The Proper sequence should be:

• A. PSQR
• B. QPSR
• C. QSRP
• D. SRPQ