Because GDP Does Not Account for Improvements in the Quality

Because GDP does not account for improvements in the quality of goods, the GDP calculation:

A) tends to overstate the true value of output in the United States.
B) tends to understate the true value of output in the United States.
C) provides an accurate value of output in the United States.
D) provides the best measure of output in the United States.
E) measures the value correctly because price changes always capture the value of quality changes.