The graph illustrates the relative risk of lung cancer in relation to the number of years of smoking and the number of cigarettes smoked per day. The statements below were made. Which of these statements are supported by the data in the graph?
- Astatement 1, statement 2 and statement 3
- Bstatement 1 and statement 2 only
- Cstatement 1 and statement 3 only
- Dstatement 2 and statement 3 only