Margie's Mother Has Been Reluctant to Tell Her That Grandpa

Margie's mother has been reluctant to tell her that Grandpa Bo is dead. After keeping Margie home with a babysitter during the funeral, her mother has said things like, "Grandpa Bo had to go away." But Margie has heard adults talking about the death, and senses that her mother is avoiding the topic, and has come to the conclusion that:

A) adults just want to protect their children.
B) the conversations were probably false and Grandpa Bo is just away for a while.
C) death is a terrifying topic that even adults can't discuss.
D) there are some things kids just shouldn't know.