A(n) ________ is a person who signs a negotiable instrument for the purpose of adding his or her name and liability to another party to the instrument.

A) fiduciary
B) indorser
C) accommodation party
D) drawee

If Pets.com is earning a rate of return less than necessary for the business to continue operations, then

A) total revenue exceeds economic costs.
B) economic costs exceed total revenue.
C) normal profit is zero.
D) economic profit is zero.