<prompt> True statement about first order kinetics is:A constant amount of a drug is eliminated in unit timeThe half-life increases with an increase in doseThe rate of elimination is constantThe rate of elimination is proportional to the plasma concentration  <response>: Drugs may follow zero order or first order kinetics. It depends on the following formula:Rate of Elimination α Plasma ConcentrationorderThus, if a drug follows zero order kinetics, Plasma Concentration0 is equal to one, in other words rate of elimination is independent of plasma concentration or rate of elimination is constant.From the above formula, rate of elimination is proportional to plasma concentration for the drugs following first order kinetics. 