Which flow diagram correctly shows what happens when tar enters the lungs?
- Acarcinogens come into contact with DNA → mutation occurs → uncontrolled cell division
- Bgoblet cells secrete more mucus → mucus accumulates causing infection → phagocytes attracted by inflammation
- Cmucus accumulates causing infection → phagocytes attracted by inflammation → elastase destroys the alveolar walls
- Dmutation occurs → phagocytes attracted by inflammation → causes irritation and coughing