Which of the following statements is$/$are correct?

A$.$ To isolate a firm's dividend decision from its other decisions, the firm's borrowing

and capital budgeting decisions are held constant.

B$.$ Buyers who purchase a stock ex$-$dividend are entitled to receive the dividend.

C$.$ Regular cash dividends are usually paid quarterly in the U$.$S$.$

D$.$ Managers appear reluctant to make dividend changes that might have to be reversed

at a later date.

E$.$ None of the above.