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
A 26yr old female presented with complaints of coloured
halos, matted and sticky eyelids since 3 days. On examination,
visual acuity was normal. Most common organism causing
this condition is 
Select and explain. 
A. Gonococcus, B. Pneumococcus, C. Staphylococcus aureus, D. Streptococcus hemolyticus
C: Staphylococcus aureus
Answer: C: Staphylococcus aureus 
Explanation: The Clinical scenario gives the diagnosis of Acute mucoopurulent conjunctivitis which is most commonly caused by Staphylococcus aureus.