Answer:
A
Explanation:
Wage differentials is the differences in wages paid to labour with different skills within the same industry or difference in wages paid to labour with the same skills but in different industries.
Reasons for wage differentials
1. level of risk of the job : the more risky a job is, the higher the wages that would be paid to labour.
2. Level of education : the more educated labour is, the higher the wages received.
3. Labour union : the labour union of a particular industry may institute a law that stipulates the wages to be paid to labour.
4. Geographical location : labour working in a developed country is more likely to be paid higher than labour carrying out the same job role in a developing country