Which of the following statements is correct?

Question $5$ Select one:

a$.$

Overhead consists of a limited variety of costs that should have the same cost driver.

b$.$

Overhead consists of a wide variety of costs that should have the same cost driver.

c$.$

Overhead consists of a variety of costs that may potentially have different cost drivers.

d$.$

Overhead consists of a limited variety of costs that must each have a unique cost driver.