Which sentence is punctuated correctly?
Samantha had a dream that she was being chased by many tiny playful happy puppies.
Samantha had a dream that she was being chased by many tiny, playful, happy puppies.
Samantha had a dream that she was being chased by many tiny, playful, happy, puppies.
Samantha had a dream that she was being chased by many, tiny, playful happy puppies.