This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'when Va/Q is INFINITY , it means \nSelect and explain. \nA. The pO2 of alveolar air is 159mmHg and PCO2 is40mmHg, B. paial pressure of alveolar gas is same as deadspae, C. Paial pressure of O2 and CO2 are equal, D. ALL TH E ABOVE', 'role': 'user'}, {'content': 'Answer: B \nExplanation: V/Q IS INFINITY WHEN DEAD SPACE IS 0 REF : HARISSONS 21ST ED', 'role': 'assistant'}]