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