The stages involved in producing insulin on a commercial scale are given. Which order of events is correct?
- A$3 \rightarrow 4 \rightarrow 1 \rightarrow 5 \rightarrow 2$
- B$4 \rightarrow 3 \rightarrow 5 \rightarrow 2 \rightarrow 1$
- C$4 \rightarrow 2 \rightarrow 5 \rightarrow 3 \rightarrow 1$
- D$3 \rightarrow 4 \rightarrow 1 \rightarrow 2 \rightarrow 5$