Minor Saw an Advertisement in a Local Newspaper That Read

Minor saw an advertisement in a local newspaper that read: "Try a new X-Acto Electric Knife in your own home on approval for five days. No obligation to buy. Fill out the coupon and mail it in today." Minor mailed in the coupon and received the knife. She liked the knife and kept it past the approval period. Title and risk of loss legally passed to Minor

A) when she mailed the coupon to the seller.
B) when the knife was delivered to her home.
C) when she kept the knife beyond the five-day period.
D) at no time, because approval was never given.