Now asap\

which sentence is punctuated correctly?
a) many americans travel to canada, in order to hunt moose during hunting season.
b) valentine's day candy hearts often say cute messages, like "cutie pie" and "hug me."
c) the picture frame, which we bought at a flea market, fell apart when we tried to hang it.
d) my cousin, who started his own business, managed to make a lot of money, in less than three months.