Maria went to Laju Supermarket. She took a basket provided by the supermarket and filled it up with various goods from the shelves. She was about to take the basket to the payment counter when she discovered that she had left her purse at home. Pretending as if nothing had happened, she slowly started to walk down the rows of shelves and put back the goods on the shelves. The supervisor of the supermarket stopped her, saying that she had bought those goods and ought to pay for them. Advise Maria.