When my aunt 's husband ( mom 's cousin ) passed away in London , my father , sister , brothers and I all knew when it first happened . My mother was out in the same morning , but we never contacted her on the phone . We waited until she got back home , and sis was with her . Then when they got near mom 's room , she told her .
According to the above context, choose the best option to answer the following question.
Question: Why did the narrator not call their mother to tell them what had happened ?
Options:
A. Their sister had told their mother .
B. None of the above choices .
C. Their mother was in London .
D. They did n't want to break the news over the phone .


D