This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: fungal infection, Subject name: Medicine
Rhinocerebral Mucormycosis is present with: 
Select and explain. 
A. Broad spectrum antibiotic use, B. Pregnancy, C. Diabetic ketoacidosis, D. Renal tubular acidosis
C: Diabetic ketoacidosis
Answer: C: Diabetic ketoacidosis 
Explanation: - Pt.'s with diabetes or immunocompromised are at risk of invasive Rhinocerebral Mucormycosis - The acidosis causes dissociation of iron from sequestering proteins in serum resulting in enhanced fungal survival & hyperglycemia contributes to risk of mucormycosis through its association with poorly characterised defect in phagocytic function.