Ans: A. Tmax and CmaxRef: Sharma & Sharma's Principles of Pharmacolog, j'd ed., pg. 30-31 and hup:// whrw. e a r op e a n r ev i ew. o r g/wp /wp - c o n t e nt/ up I o a d s/6. p df .From the plasma concentration graph, we obtain three impoant parametersCmax is the peak plasma concentrationTmax i.e. time to attain the peak plasma concentration or CmaxAUC (Area under the curve) of plasma concentration time graphThe 1st two parameters i.e. Cmax and the Tmax are the indicators of the rate of absorption.