The word "returns" in paragraph three can be best replaced by

A．keeping cash is the only way to avoid risks
B．the longer you own a stock, the more you lost
C．the high rate of profit and high rate of risk coexist in stocks
D．the best way to accumulate wealth is by investing in stocks

A．Everybody can get rich with some financial assets.
B．The credit risk for treasury bonds is extremely high.
C．It's no use trying to know the advantages of stocks, bonds and cash.
D．Everybody should realize the importance of distribution of their financial assets.