This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Cell drinking is also known as: 
Select and explain. 
A. Phagocytosis, B. Pinocytosis, C. Endocytosis, D. None of the above
B: Pinocytosis
Answer: B: Pinocytosis 
Explanation: Pinocytosis ("cell drinking") is a similar process with the vesicles much smaller in size and the substances ingested are in solution. Ref: Ganong's Review of Medical Physiology 23rd edition, Chapter 2.