Thomas, the Department Head of the meat processing unit of a food manufacturing company, refuses to allow an OSHA $($Occupational Safety and Health Administration$)$ compliance inspector to carry out the inspection process. In this scenario, what action can the OSHA inspector take?

a$.$

The OSHA inspector must show probable cause before proceeding with the search.

b$.$

The OSHA inspector must produce a search warrant to enter the unit.

c$.$

The OSHA inspector can proceed to search without a warrant if the investigation was initiated by a complaint.

d$.$

The OSHA inspector can enter the unit forcefully with the help of his officials.