单选题Which of the following calendaring syntax expressions would evaluate to the last day of every month？（）A FREQ = MONTHLY； BYMONTHDAY = 31B FREQ = MONTHLY； BYMONTHDAY = -1C FREQ = DAILY； BYDAY = -1D FREQ = MONTHLY； BYDAY = 31E FREQ = DAILY； BYMONTHDAY = LAST_DAY
单选题
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
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