What is the best way to: wash your comforter

OPT:
I. Wash the comforter with the machine set on the gentle or delicate cycle, using cool or warm water. Since every comforter is a bit different, check the care tag or contact the manufacturer for detergent suggestions. Then dry the comforter in the oven with a few tennis balls to plump it up.;
II. Wash the comforter with the machine set on the gentle or delicate cycle, using cool or warm water. Since every comforter is a bit different, check the care tag or contact the manufacturer for detergent suggestions. Then dry the comforter on low heat with a few tennis balls to plump it up.;
Answer:
II.