This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
Type 4 hypersenstivity to mycobacterium tuberculosis antigen may manifest as 
Select and explain. 
A. Iridocyclitis, B. Polyaeritis nodosa, C. Phlyctenular, D. Giant cell aeritis
C: Phlyctenular
Answer: C: Phlyctenular 
Explanation: Most common ocular manifestation of TB is Phlyctenular keratoconjunctivitis Refer: Khurana 6th edition page number 83