When the seller of goods has a voidable title thereto, but his title has not been avoided at the time of the sale, the buyer acquires title to the goods. Such acquisition of title has the following requisites, except the: Select one:
a. buyer must have bought the goods in good faith.
b. buyer must have bought them for value.
c. buyer bought them without notice of the seller’s defect of title.
d. party from whom the seller obtained the goods must ratify the sale