managerial accounting

Hi, I have test of managerial accounting 

I have the following questions 

1- In a corporate setting, property taxes are an example of a(n) ________.

A.committed fixed cost             B.mixed cost             C.engineering cost                D. discretionary fixed cost

2- A cause and effect relationship between a ________ and a ________ is desirable in order to obtain accurate and useful cost functions.

A.cost function; resource cost             B.cost driver; resource cost                 C.step cost; capacity cost                   D. cost driver; cost function

3- The process of identifying appropriate cost drivers and their effects on the costs of making a product or providing a service is called ________. A. account analysis                B. cost analysis                    C. product analysis                    D. activity analysis