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
正确答案是B