According to the passage, which of the following statement is NOT true

A．AIM chiefly organized the 1972 "Trail of Broken Treaties."
B．The next major AIM action was the 1973 occupation of the town of Wounded Knee, the site of a bad-reputation massacre of Native Americans by U.S. troops in 1890.
C．AIM began to splinter apart during 1970s.
D．The 1990s have seen a severe revival of the organization.