In an Efficient Market,a Simple Buy-And-Hold Policy Is

In an efficient market,a simple buy-and-hold policy is:

A) the best strategy because trying to beat the market is almost impossible.
B) the best strategy because evidence suggests that even private information cannot yield abnormal returns.
C) not the best strategy because,as share prices change over time,portfolios warrant re-balancing.
D) not the best strategy because,in an efficient market,some investors must believe that the market is inefficient.