The per-unit amount of three different production costs for Jones, Inc., are as follows: Production Cost A Cost B Cost C 20,000 $12.00 $15.00 $20.00 80,000 $12.00 $11.25 $5.00 What type of cost is each of these three costs?

a)Cost A is fixed, Cost B is mixed, Cost C is variable

b)Cost A is fixed, Cost B is variable, Cost C is mixed

c)Cost A is variable, Cost B is mixed, Cost C is fixed

d)Cost A is variable, Cost B is fixed, Cost C is mixed