During pregnancy, drug distribution is more. Which of the following sentences describe the given fact better?

• A. The baby needs more drug
• B. The mother needs more drug due to high metabolism
• C. The surface area increases in the mother’s body due to the presence of uterus, placenta, and foetus. Thus more area for distribution of drugs
• D. The growth of the uterus, placenta, and foetus increases the volume thus increasing distribution. And even the baby forms a separate compartment for a drug to get distributed