Sentence Structure

Which sentence below is a Compound Sentence (IC + IC)?

A. JoAnn and Thomas plan to cook dinner for us tonight

B. JoAnn and Thomas have planned all day to go out and eat dinner with us tonight.

C. JoAnn worked all day to cook him dinner, but Thomas wouldn't be able to come.

D. While JoAnn cooked dinner, Thomas cleaned the living room.