After extensive negotiation Bob agrees to sell Sally his office building for $100,000.00. He has his assistant type up the contract to send to Sally to sign. His assistant accidentally adds and extra zero in the price, making it $1,000,000.00 and sends it off. Sally too overlooks the mistake and signs the agreement. Later Sally requests that the contract be corrected to reflect their true intentions through a process called
a) Reformation
b) Rescission
c) Novation
d) Ratification