In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
Q: Question: What proportion of insulin and C-peptide synthesize the beta cells of the islets of Langerhans?
Options: <0> One molecule of insulin per C peptide <1> Two molecules of insulin for each peptide C. <2> One molecule of insulin for every two peptides C. <3> Peptide C is synthesized in C cells <4> There is a variable proportion between the synthesis of insulin and that of peptide C.
A:
pharmacology