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: Pathology
In primary tuberculosis, all of the following may be seen except - 
Select and explain. 
A. Cavitation, B. Caseation, C. Calcification, D. Giant cell
A: Cavitation
Answer: A: Cavitation 
Explanation: Tuberculosis 

Depending on the time of infection and the type of response pulmonary tuberculosis may be classified as primary and post-primary.
Primary tuberculosis is the initial infection by tubercle bacilli in a host.
Post-primary (secondary or adult) type of tuberculosis is due to reactivation of latent infection or exogenous reinfection.