The graph displays a person's blood glucose concentration during the hours following breakfast eaten at 07:00. Which blood glucose concentration level is approximately the set point?
- A$70\,\text{mg}\,/\,\text{cm}^3$
- B$80\,\text{mg}\,/\,\text{cm}^3$
- C$100\,\text{mg}\,/\,\text{cm}^3$
- D$120\,\text{mg}\,/\,\text{cm}^3$