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
Recombinant human insulin is made by 
Select and explain. 
A. CDNA from any eukaryote cell, B. Genome of any eukaryote, C. CDNA of pancreatic cell, D. Genome of pancreatic cell
C: CDNA of pancreatic cell
Answer: C: CDNA of pancreatic cell 
Explanation: Answer is C (CDNA of pancreatic cell)