Before Kimberly Campbell Opened Her Jiffy Print Store, She Processed

Before Kimberly Campbell opened her jiffy print store, she processed several large print jobs for local merchants for free, to demonstrate the quality of her service and to solicit feedback. Two of the merchants wrote favorable reviews of Kimberly's service, and agreed to let Kimberly post the reviews on her company's Web site. The companies that wrote the favorable reviews are referred to as ________.

A) appreciation reports
B) acknowledgement accounts
C) referent accounts
D) tribute reports
E) approval reports