This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'Mycotic aneurysm is an aneurysm infected because of- \nSelect and explain. \nA. Fungal infection, B. Blood-borne infection (Intravascular), C. Infection introduced from outside (extravascular), D. Both intravascular and extravascular infection', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A mycotic aneurysm is a dilation of an aery due to damage of the vessel wall by an infection. It is also referred to as infected aneurysm. The term "mycotic" referring to fungal is a misnomer as various organisms including predominantly bacterial can cause the aneurysm. Ref Davidson 23rd edition pg 345', 'role': 'assistant'}]