Let μ be the radiation level to which a radiation worker is exposed during the course of a year. The Environmental Protection Agency has set the maximum safe level of exposure at 4 rem per year. If a hypothesis test is to be performed to determine whether a workplace is safe, which is the most appropriate null hypothesis: H₀​:μ≤4.00,H₀​:μ≥4.00, or H₀​:μ=4.00 ? Explain.

A. H₀​:μ=4 is the best hypothesis. If H₀​ is rejected, we can be convinced that μ≠4 and that the workplace is safe. If H₀ is not rejected, then the workplace might not be safe.

B. H₀​:μ≥4 is the best hypothesis. If H₀​ is rejected, we can be convinced that μ<4 and that the workplace is safe. If H0₀ is not rejected, then the workplace might not be safe.

C. H₀​:μ≤4 is the best hypothesis. If H₀​ is rejected, we can be convinced that μ>4 and that the workplace is safe. If H₀​ is not rejected, then the workplace might not be safe.