Anita and Sarah Are Two Adolescent Girls Who Recently Had

Anita and Sarah are two adolescent girls who recently had their first "go steady" relationships. Coincidentally, their boyfriends both decided to end the relationships on the same day. Anita and Sarah have spent the last couple of days talking on the phone, spending time together, and texting each other about their broken hearts. This is an example of

A) ​co-collectivism.
B) ​co-dependency.
C) ​co-rumination.
D) ​co-muddling.