DOUG: (taping a "Lost Dog" poster to a street sign) Grace, what are we going to do if we don't get Buster back?
GRACE: (checking her phone) Doug, we have to be patient. You know we have Buster registered with PetFinders. I am checking the app right now. These signs will help, too.
DOUG: (running ahead to the next street sign, calling back as he runs) Come on then, hurry up. We have a lot of work to do. Dad said to be home by 5:00.
Evidence from the stage directions supports which statement?

A) Dad thinks Doug is too young to have his own cell phone.

B) Doug and Grace are sad and think Buster is gone forever.

C) Doug and Grace are worried but hopeful they will find Buster.

D) Doug and Grace do not care very much about finding Buster.