Which of the following is true with regards to Iddat period?

A. Iddat of widowhood is 4 months and 10 days

B. the period of Iddat begins from the date when she comes to know of divorce and not from the date when divorce is pronounced

C. If the marriage is irregular and is consummated, the wife is under obligation to observe Iddat

D. If the wife observes Iddat husband is bound to maintain the wife during the period on Iddat

E. In case the wife is pregnant, period of Iddat extends till the delivery of the child.

Choose the most appropriate answer from the options given below: