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: Pharmacology
Which of the following is a broad spectrum systemic antifungal agent ? 
Select and explain. 
A. Econazole, B. Miconazole, C. Ketoconazole, D. Clotrimazole
C: Ketoconazole
Answer: C: Ketoconazole 
Explanation: None