Answer all 4 please as they are parts under 1 question section. Thank you!!

A cost that includes both a fixed and a variable cost component is called a:

a. Mixed Cost

b. Step-variable cost

c. Curvilinear cost

d. Regression cost

Which one of the following statements is not true?

a. Total fixed cost remains the same regardless of volume within the relevant range

b. Total variable cost changes with volume changes.

c. Fixed cost per unit increases as volume decreases.

d. Variable cost per unit decreases as volume decreases.

For Bad Company, Cost A was $5,000 at 1,000 units of output and $25,000 at 5,000 units of output. Cost B was $1,000 at 1,000 units of output and $3,750 at 5,000 units of output.

a. Cost A and Cost B are variable costs.

b. Cost A and Cost B are mixed costs.

c. Cost A is a variable cost and Cost B is a mixed cost.

d. Cost A is a mixed cost and Cost B is a variable cost.

Which of the following costs are most likely to be classified as variable?

a. Factory rent

b. Manager salaries

c. Straight-line depreciation

d. Direct materials

e. Insurance