Which one of the following statements is true?

A. The statistics on GDP are frequently revised as new data are collected over the course of the year.
B. Since the statistics on GDP are frequently revised, businesses and government officials rarely use the GDP data to make decisions.
C. Since the statistics on GDP are frequently revised, the early reports on GDP are meaningless.
D. The statistics on GDP are rarely revised because the government waits until all data have been collected to report the statistics on GDP.