Amy asks Sue to drop off a package at the downtown office of Federal Express for overnight delivery. Since Amy has a billing account with Federal Express, Sue was not required to pay any fees when dropping off the package. However, because the Federal Express parking lot was full, Sue incurred a $10 expense to park in a lot across the street. Sue's authority to incur the parking lot expense is said
to be:
a. Express
b. Implied
c. Apparent
d. Unauthorized