Foams are ________.
A. solutions that contain a drug in a water base
B. expanded by tiny aerosol bubbles
C. expelled from a container when they are used
D. all of the above
Answer:D
Foams are ________.
A. solutions that contain a drug in a water base B. expanded by tiny aerosol bubbles C. expelled from a container when they are used D. all of the above
Explanation: A) This is true, but it is not the only correct answer.