According to the passage, which of the following is NOT a factor in complete understanding of price
A) Instructions that come with a product. C) The quality of a product.
B) Money amount. D) Guarantees on the product.

A．She should take the medicine as she was directed to do.
B．She should make another appointment with her doctor.
C．She should stop taking the medicine.
D．She should take a good rest.

A．He has just finished a cigarette.
B．He doesn’t care for that brand.
C．He isn’t seated in the smoking section.
D．He doesn’t like to smoke.