After the murder of her three children, what does Doree’s change of appearance indicate?

After the murder of her three children, what does Doree’s change of appearance indicate?
A.She is a person in disguise, assuming the identity strictly of her profession.
B.She abandons the role of a daughter, mother and wife.
C.She wants to assume an identity of a maid.
D.Both a and b
正确答案：D