（447）Which of the following calendaring syntax expressions would evaluate to the last day of every month?

A. FREQ=MONTHLY;BYMONTHDAY=31

B. FREQ=MONTHLY;BYMONTHDAY=-1

C. FREQ=DAILY;BYDAY=-1

D. FREQ=MONTHLY;BYDAY=31

E. FREQ=DAILY;BYMONTHDAY=LAST_DAY

答案：（B）

重复：440