All Else Equal,the Market Value of a Stock Will Tend

All else equal,the market value of a stock will tend to decrease by roughly the amount of the

A) pretax dividend amount on the ex-dividend date.
B) aftertax dividend amount on the ex-dividend date.
C) pretax dividend amount on the declaration date.
D) pretax dividend amount on the date of payment.
E) aftertax dividend amount on the date of payment.