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
Pterygium all are true except: 
Select and explain. 
A. Arise from any pa of conjunctiva, B. Can cause astigmatism, C. Surgery is treatment of choice, D. UV exposure is risk factor
A: Arise from any pa of conjunctiva
Answer: A: Arise from any pa of conjunctiva 
Explanation: Ans. Arise from any pa of conjunctiva