Which of the Following Statements Is True of Wealth Share

Which of the following statements is true of wealth share of the bottom half and the upper-middle class households in the United States?

A) The wealth shares of bottom half households have declined, whereas the wealth shares of the upper-middle class households have increased since 1989.
B) The wealth shares of both household types have seen a systematic rise since 1989.
C) The wealth shares of both household types have seen a systematic decline since 1989.
D) The wealth shares of bottom half households have increased, whereas the wealth shares of the upper-middle class households have declined since 1989.