PLEASE HELP ASAP!

PLEASE HELP ASAP!!

which of the following statements about dow jones industrial average is not accurate?

A. The Dow is a an average of several key stocks that are representative of the economy as a whole.

B. Between May 1928 and September 1929 the value of the Dow nearly doubled.

C. Between May 1928 and September 1929 the value of the Dow nearly tripled.

D. The Dow is used to measure the performance of the entire stock market.