Melissa and Christie Have Been Friends for About a Year

Melissa and Christie have been friends for about a year. During that time, they have each talked about their views on politics, their lifestyles, and their interests. They have also talked about things that they have only told a few other people, like how they feel about friends and family. Additionally, they have told each other things that they have not told anyone else. Christie told Melissa about the pain and resentment she felt when her parents split. Melissa told Christie about how she has struggled with an eating disorder. Which part of this description speaks of breadth in terms of the social penetration model?

A) Their talks about politics, their lifestyles, and their interests.
B) Their disclosures about how they feel about friends and family.
C) Christie's revelation about the pain and resentment she felt when her parents split.
D) Christie's revelation about the pain and resentment she felt when her parents split AND Melissa's revelation about how she struggled with an eating disorder.