How is a predetermined overhead rate calculated?

a$)$ Divide budgeted overhead cost by the budgeted amount of cost driver or activity base

b$)$ Divide actual overhead cost by the budgeted amount of cost driver or activity base

c$)$ Divide budgeted overhead cost by the actual amount of cost driver or activity base

d$)$ Divide actual overhead cost by the actual amount of cost driver or activity base

e$)$ Divide the budgeted amount of cost driver or activity base by the actual overhead cost

Which of the following is correct?