Professor Jeremy Siegel, of the University of Pennsylvania, Did Research

Professor Jeremy Siegel, of the University of Pennsylvania, did research showing that:

A) owning stocks over the long run produces returns below the risk-free return.
B) if an investor owns stocks for a very short time the risk is greater than if the stocks are held for a long time.
C) the return on the S&P 500 for a 25-year period often produces returns below zero.
D) bonds really are less risky to hold over the long term.