In an Efficient Market,ignoring Taxes and Time Value,the Price of Stock

Multiple Choice

In an efficient market,ignoring taxes and time value,the price of stock should:

A) decrease by the amount of the dividend immediately on the declaration date.
B) decrease by the amount of the dividend immediately on the ex-dividend date.
C) increase by the amount of the dividend immediately on the declaration date.
D) increase by the amount of the dividend immediately on the ex-dividend date.
E) Both decrease by the amount of the dividend immediately on the ex-dividend date; and increase by the amount of the dividend immediately on the declaration datE.