Schedule of Activity Costs
Quality Control Activities	Activity Cost
Product testing	$55,000
Assessing vendor quality	26,000
Recalls	18,000
Rework	29,000
Scrap disposal	8,000
Product design	30,000
Training machine operators	46,000
Warranty work	12,000
Process audits	22,000

From the above schedule, calculate the following:

a. Prevention costs $

b. Appraisal costs $