A Firm Is Interested in What Other Firms Are Paying

A firm is interested in what other firms are paying for a typical worker with certain level of productivity because

A) this firm can then underpay their workers.
B) this firm understands the threat that other firms will likely hire away their good workers if their good workers are underpaid.
C) Canadian labour laws require that all workers must be paid equally in the same profession.
D) this firm is trying to hire the typical worker.
E) this is a new firm with very little experience in hiring new workers.