【单选题】Delta Co. in State D sent an offer by mail to Echo Co. in State E on January 1. On January 10, Echo Co. mailed back a rejection. On January 11, Echo Co. changed its mind and sent an acceptance in th...
A.
no contract because the rejection was effective on its dispatch on January 10.
B.
a contract because the acceptance was effective on its dispatch on January 11.
C.
a contract because the acceptance was effective on its receipt on January 22.
D.
no contract because the rejection was effective on its receipt on January 23.