tell me the answer and explain why, thx

q The following are the expected quality costs for a firm for a selected period. Line inspection $ 1000 Normal spoilage identified $ 500 0/?0 d d Design engineering $ 20 000 pomawm e Returned goods $ 4000 Customer problems and complaints $ 3000 Rework $ 5000 Preventive maintenance $ 5000 Product liability claims $ 30 000 Incoming materials inspection $ 1500 Breakdown maintenance $ 2000 Producttesting labour $ 6000 Training $ 4000 Supplier evaluations $ 2000 Calculate the amount of internal failure costs