A drug has a volume of distribution of 40 L, half life of 1 day, the total body clearance of the drug is :

A drug has a volume of distribution of 40 L, half life of 1 day, the total body clearance of the drug is :
a. 8 ml/min
b. 10 ml/min
c. 19 ml/min
d. 29 ml/min