choose the correct sentence that describes the diagram

a$.$ The employee must exclusively be SALARIED or HOURLY and hold one or more of the positions $($TECHNICIAN$,$ SECRETARY, ENGINEER$),$ or be a MANAGER.

b$.$ The employee must only be SALARIED or HOURLY and can be a TECHNICIAN, SECRETARY, or ENGINEER, or it can be a MANAGER.

c$.$ None of these

d$.$ The employee can be SALARIED or HOURLY and must be a TECHNICIAN, SECRETARY, ENGINEER, or MANAGER.