Labour productivity has risen. Which combination of effects is most likely?
- Ashift of demand curve for labour: none; shift of supply curve for labour: inward; effect on wage rate: increase
- Bshift of demand curve for labour: none; shift of supply curve for labour: outward; effect on wage rate: decrease
- Cshift of demand curve for labour: inward; shift of supply curve for labour: none; effect on wage rate: increase
- Dshift of demand curve for labour: outward; shift of supply curve for labour: none; effect on wage rate: increase