This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
What will occur with increase in alveolar ventilation rate 
Select and explain. 
A. Decreased paial pressure of O2 in alveoli, B. Decreased paial pressure of CO2 in alveoli, C. Decreased CO2 diffusion from blood to alveoli, D. Decreased O2 diffusion from alveoli to blood
B: Decreased paial pressure of CO2 in alveoli
Answer: B: Decreased paial pressure of CO2 in alveoli 
Explanation: With increase in alveolar ventilation rate there is decrease in paial pressure of co2 in the alveoli Ref: guyton and hall textbook of medical physiology 12 edition page number: 332,333,334