Based on the following cost data, items labeled (a) and (b) in the table below are which of the following amounts, respectively?

(a) = $3,00; (b) = $3.00

(a) = $5.00; (b) = $4.00

(a) = $2.50; (b) = $2.00

(a) = $5.00; (b) = $2.00

Number of units Total cost Variable Fuced Cost per unit Variable Fixed 1,500 $7,500 $6,000 $5 $4 3,000 $15,000 $6,000 (a) (b)