问题如下：
Which is the theory proposed by R. N. Elliott in 1938?
选项：
A.Western economies have cycles every 54 years.
B.Equity markets move in cycles following Fibonacci ratios.
C.Decennial pattern exists in DJIA.
解释：
B is correct.
R. N. Elliott discovered that market waves follow patterns that are ratios of the numbers in Fibonacci sequence in 1938.
老师，这个知识点不知道在哪里，能否这道题解答下，感谢！
