Ping enters into a rental agreement with ABC, Inc., a national college textbook rental company. Pursuant to that agreement, Ping rented three textbooks for his three business management courses. ABC promptly made the textbooks available for download. During the first week of the semester, Ping realizes that one of the textbooks is not the edition that he ordered from ABC. Which, if any, of the following are true? a) None of These. b) Ping must accept the downloaded book because it is a rental. c) Ping may only obtain store credit with Ping's bookstore. d) Ping my reject the book by notifying ABC within a reasonable time. e) Ping must accept the download because it is an e-book and nonreturnable.