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: Radiology
Local cerebral lesion with ring on CT scan is caused by: 
Select and explain. 
A. Toxoplasmosis, B. Intracranial haemorrhage, C. Cysts, D. Hamaoma
A: Toxoplasmosis
Answer: A: Toxoplasmosis 
Explanation: A i.e. Toxoplasmosis Conditions causing ring-enhancement with CT (contrast) - ToxoplasmosisQ - Cysticercosis - TuberculomaQ - Pyogenic abscess - Glioma metastasis - Craniopharyngeoma - Gaint aneurysm