Suppose that a company is spending $$60,000$ per year for inspecting, $$30,000$ for purchasing, and $$40,000$ for reworking products. A good estimate of nonvalue$-$added costs would be

$1.$ $$70,000.$

$2.$ $$130,000.$

$3.$ $$40,000.$

$4.$ $$90,000.$

$5.$ $$100,000$