Which of the following are characteristics of Calendars? Note: There are 2 correct answers to this question.

Which of the following are characteristics of Calendars? Note: There are 2 correct answers to this question.
A . You can have two rules with the same name, as long as they are on different Calendars.
B. You can change the dates of a period after a Pipeline has been run without causing a disconnect in the results.
C. Leaf periods on a Calendar CANNOT contain gaps or overlap.
D. You CANNOT delete a period once a Pipeline has been run for that period.

Answer: C,D