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: Medicine
Which of the following situations will lead to increased viscosity of blood: 
Select and explain. 
A. Fasting state, B. Hypoglycemia, C. Multiple myeloma, D. Amyloidogenesis
C: Multiple myeloma
Answer: C: Multiple myeloma 
Explanation: C i.e. Multiple myeloma