Which of the Following Most Accurately Describes the Correlation Between

Which of the following most accurately describes the correlation between the aging populations of the U.S.and Japan?

A) Japan's aging population follows a similar growth curve to that of the U.S. ,though there is about a 20-year lag behind the U.S.
B) Japan and the U.S.have followed a similar growth curve of the elderly population since 1990.
C) The U.S.is currently experiencing similar growth of the elderly population as a share of the total,such as Japan experienced during 1990-2010,though at a slower rate.
D) The elderly population in the U.S.is projected to surpass that of Japan by the year 2020.