Rani works for a company that has clearly defined lines of authority. Each employee knows that he or she has authority and responsibility for a distinct set of tasks. Employees are also aware of the company$$s reporting structure as well as successive management levels all the way to the top. Rani$$s company follows which principle?

a$.$

Unity of command principle

b$.$

Responsibility principle

c$.$

Scalar principle

d$.$

Authority principle

e$.$

Specialization principle