When you purchase a book on Amazon, you generally have two choices: Buy it directly from Amazon, or purchase it through Amazon but from a third-party vendor. If you go the direct route, Amazon has already purchased the book from a publisher and is holding it in an Amazon fulfillment centera ________ transaction. If you take the third-party route, Amazon acts as an agent for the supplier and takes a commission of about 10 percent of the value of the merchandise for the right to sell it on Amazon's platforma ________ transaction.

a) B2B; derived

b) derived; B2C

c) B2B; B2B

d) B2C; B2C

e) B2C; B2B