How to define the “lag time” according to the video clip?
A.
It refers to the period of time when the administration of drug has been postponed.
B.
It refers to the period of time when the drug cannot be detected after the administration.
C.
It refers to the period of time it takes for the drug to reach the peak level.
D.
It refers to the period of time when the drug cannot be detected after the elimination.