Your manager requires that you, as cashier, immediately enter each sale on the register. Lately, lunch hour traffic has increased and the assistant manager instructs you to avoid delays by taking customer's cash and making change without entering the sale. The assistant manager says she will add up the cash and enter sales with one transaction after the lunch crowd leaves. She says that, in this way, the register will always match the cash amount when the manager arrives at 3pm. What should you do? Why?