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
An adult has a respiratory rate of 15/min, tidal volume is 400cc, anatomic dead space is 100C.
Respiratory minute volume is: 
Select and explain. 
A. 4500cc, B. 4000cc, C. 6000cc, D. 3500cc
C: 6000cc
Answer: C: 6000cc 
Explanation: Respiratory minute volume is: Tidal volume × respiratory rate.