Tops Meat had to recall all of its frozen hamburger patties because of the presence of E-Coli in the meat. About 20 consumers who ate the Tops patties became ill and two died. The E-Coli was present in the animals Tops purchased for slaughter from various ranchers. a. Tops is not liable to its purchasers because it did not produce a defective product. b. Tops is not liable to its purchasers because it was not aware of the E-Coli when it sold its products. c. Tops is liable to its purchasers for any injuries and damages from the presence of E-Coli. d. both a and b.