000 500 2,000 COST A $420 $2,130 $2,840 COST B $...

1,000 1,500 2,000

Cost A $1,420 $2,130 $2,840

Cost B $1,550 $2,200 $2,900

Cost C $1,000 $1,000 $1,000

Cost D $1,630 $2,445 $3,260

The cost behavior of each of the Costs A through D, respectively, is

a. semi-variable, variable, fixed, and variable.

b. variable, semi-variable, fixed, and semi-variable.

c. variable, fixed, fixed, and variable.

d. variable, semi-variable, fixed, and variable.