Graduate Pharmacy Aptitude Test (GPAT) 2012 Solved Paper

Following statements are given for local anaesthetic drug lidocaine:
[P] : It contains a xylidine moiety
[Q]: It can be used as antiarrhythmic agent on oral administration.
[R] : When administered along with adrenaline its toxicity is reduced and its effect is prolonged
[S] : Chemically it is 2-diethylamino-2',6'-dimethylphenyl acetamide
Choose the correct combination of statements.