Two years ago, the manager of a large department store purchased new bar code scanners costing $39,000. A salesperson recently tried to sell the manager a new computer-integrated checkout system for the store. The new system would save the store a substantial amount of money each year. The recently purchased scanners could be sold in the secondhand market for $19,000. The store manager refused to listen to the salesperson, saying, I just bought those scanners. I cant get rid of them until I get my moneys worth out of them. What type cost is the cost of purchasing the old bar code scanners? What common behavioral tendency is the manager exhibiting?