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: Ophthalmology
What is the most common eye pathology in rheumatoid ahritis? 
Select and explain. 
A. Scleritis, B. Episcleritis, C. Keratoconjunctivitis sicca, D. Anterior uveitis
C: Keratoconjunctivitis sicca
Answer: C: Keratoconjunctivitis sicca 
Explanation: Answer- C. Keratoconjunctivitis siccaMC ocular manifestation of RA- Dry eye(Keratoconjunctivitis sicca).