Charles needs to ensure that when users enter information into a date field in a form for his Employees table that it follows a particular format. Which option will he use to enforce this? A)Input mask
B) Data type
C) Form fields
D) Table properties

Within the relevant range, if there is a change in the level of the cost driver, then a. total fixed costs will remain the same and total variable costs will change b. total fixed costs will change and total variable costs will remain the same c. total fixed costs and total variable costs will change d. total fixed costs and total variable costs will remain the same