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
Macula involvement is common in -a) Toxoplasmab) Malariac) CMVd) Syphilis 
Select and explain. 
A. abc, B. acd, C. bc, D. bde
B: acd
Answer: B: acd 
Explanation: Macula lies at posterior pole of retina. All the causes of retinitis / chorioretinitis can involve the macula. The common causes are HIV/AIDS, syphilis, Toxoplasmosis, tuberculosis, CMV, sarcoidosis.