With regard to insulin choose correct options. A. C-peptide is not present in mature insulin. B. The insulin produced by…

With regard to insulin choose correct options.
A. C-peptide is not present in mature insulin.
B. The insulin produced by rDNA technology has C-peptide.
C. The pro-insulin has C-peptide.
D. A-peptide and B-peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.