Which sentence uses correct capitalization?

Ado we have any of the crunch crisp brand cereal left?

Bmy aunt works for the united states department of defense.

Cone of tennessee williams's plays is cat on a hot tin roof.

Dwho rode with whom to lunsford park?

Amany people retire and move to communities in the southwest.

Bif you ride the bike trail along the potomac river, you'll be traveling west.

Cmany japanese-americans were ...