Study each of the following case. Answer the questions that follow with Yes or No.

Kallinteris opened a travel agency in her small town. She then received an e-mail message from a local office supply company with which she had no prior dealings wishing her luck with her new business and advising her that she would soon be receiving $250 worth of office supply items, such as file folders, pens, printer cartridges, and so on, unless she informed the company that she did not want these items. Kallinteris did not respond to the e-mail message and received the supplies a few days later. 

a. Does Kallinteris’s silence constitute an acceptance of the terms of the agreement?
b. Does a valid contract between Kallinteris and the office supply company exist?
c. If Kallinteris uses the supplies, will she be required to pay for them?