In Order to Establish a Cause of Action Based Upon

In order to establish a cause of action based upon strict liability in tort for personal injuries resulting from the use of a defective product,the plaintiff must start the case by proving that the seller (defendant) :

A) was engaged in the business of selling the product.
B) failed to exercise due care.
C) defectively designed the product.
D) was in privity of contract with the plaintiff.