Answer:
The correct answer is B. This is an example of two-tier wage contracts.
Explanation:
The example of Jack and his friend Sam, hired at the same company, doing the same job and charging different wages, is a clear example of the two-tier wage system, whereby companies hire workers to perform equal tasks with different wages.
This usually happens because companies, as a way to lower their costs, hire employees at lower wages than those of previously hired employees, which in practice carry out the same activities but earning a totally different salary.
