XYZ Declared a Dividend of $0

XYZ declared a dividend of $0.80 a share.The ex-dividend date is tomorrow.All else constant,you would expect the opening price tomorrow morning to be:

A) lower by an amount approximately equal to the after-tax value of the dividend
B) the same as today's closing price since the dividend is expected
C) $0.80 lower than today's closing price
D) higher by an amount approximately equal to the after-tax value of the dividend
E) $0.80 higher than today's closing price