One afternoon while ending up your shift as the stock manager at Circus Supermarket, the store manager says you that he desperately needs some help with an inventory problem. In the back of the store, he displays you an unmarked, unopened tin can as well as explains that the owners of the store are threatening to fire him as well as all his staff if they can't keep track of the items that they sell. There are no inventory records to trace the source of the can so he asks you, the stock manager, to assists him figure out what is inside.

There is one catch. He doesn't want to open the can just in case there is somewhat expensive inside. Instead, you as the stock manager will ask queries about the can from the store manager, your instructor