Professor James said to Mary Digit, president of the X-L Secretarial Service, "Since you folks have done good typing work for me in the past, I promise to bring you the manuscript for my new book." "When?" asked Mary Digit. "First chapter next Monday," replied James. "Wouldn't that be nice," said Mary Digit. The following Monday, James, forgoing the services of another secretarial service, brought the first chapter to the X-L office, but Mary Digit refused to take it, saying that they were all booked up for three weeks. Which of the following facts or inferences would be most helpful in an action by James against X-L?
"When" and "Wouldn't that be nice" implied a promise to type the manuscript.  James relied on Mary Digit's statement by bringing the manuscript to X-L. X-L had done good work for James in the past. James had forgone the services of another secretarial service