The diagrams illustrate the wage rates of cleaners (OWc) and nurses (OWn). What effect would there be if a national minimum wage of OM were introduced?
- Awage rate of cleaners: fall; wage rate of nurses: rise
- Bwage rate of cleaners: no change; wage rate of nurses: fall
- Cwage rate of cleaners: rise; wage rate of nurses: fall
- Dwage rate of cleaners: rise; wage rate of nurses: no change