A malnourished child from a poor socioeconomic status,residing in overcrowded and dirty areas presents with a nodule around the limbus with hyperemia of surrounding conjunctiva in his left eye.He is also observed to have axillary and cervical lymphadenopathy.Which of the following is the most likely diagnosis:

• A. Vernal keratoconjunctivitis
• B. Episcleritis
• C. Phlyctenular conjunctivitis
• D. Foreign body granuloma