Smith, intending to order two apple pies, mistakenly ordered $20$ apple pies at the price of $$3$ per pie from the Jones Bakery, which delivered the $20$ pies without knowledge of Smith's mistake.

A$.$ The contract is void.

B$.$ Smith may rescind the contract at any time.

C$.$ Smith must pay the reasonable value for $20$ pies.

D$.$ Smith must pay $$60$ for the pies.