Which One of the Following Is the Most Accurate Observation

Which one of the following is the most accurate observation of product quality?

A) Product quality is more dependent on labor than on the other factors of production.
B) It is a measure of how well a product does what it is intended to do.
C) Quality refers to a product's ability to make an impact on the customers.
D) It can be defined as a ratio of the total output to the total input.
E) Quality refers to the design attributes that are formed internally.