The name of the drug used in cancer treatment produced by biotechnology is:

Which protein is used for the treatment of emphysema?

Which of the following peptides is $NOT$ present in mature human insulin?

The first human drug made by using genetic engineering technique was

Which protein production was successfully introduced in $E. coli$?

With regard to insulin,choose the 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.