Which of the following characteristics relates to departmentalization?

a$.$ The grouping of related jobs to form an administrative unit$$department$,$ area, or center

b$.$ The grouping of jobs according to similar economic activities, such as finance, production and operations, and marketing

c$.$ The way managers group jobs into departments and departments into divisions

d$.$ A structure in which members of different functional departments are chosen to work together temporarily on a specific contract or project