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: Medicine
True or false
1.  Bronchoscopy with BAL is mainstay of diagnosis for pneumocystic pneumonia
 2. Pneumatoceles are seen in all cases of pneumocystic pneumonia
3.  CD4 count < 350 /µL is indication for prophylaxis against pneumocyctis carini pneumonia
 4. Trimethoprim - sulfamethoxazole is drug of choice for prophylaxis. 
Select and explain. 
A. 1 - True, 2 - False, 3 - False, 4 - True, B. 1 - False, 2 - True , 3 -True , 4 - False, C. 1 - True, 2 -True, 3 - False, 4 - True, D. 1 - False, 2 - False , 3 -True , 4 - False
A: 1 - True, 2 - False, 3 - False, 4 - True
Answer: A: 1 - True, 2 - False, 3 - False, 4 - True 
Explanation: CD4 count <200 /µL is indication for prophylaxis.
Pneumatoceles may be seen, but not in all cases.