Suzy is one year old. She receives a toy telephone for Christmas. Because Suzy is one, she tends to put everything in her mouth including the toy telephone. Suzy is soon thereafter diagnosed with lead poisoning because the paint used on the toy telephone is determined to contain lead. Suzy's parents sue the manufacturer of the telephone in products liability. What form of products liability will they most likely sue under?

misuse

manufacturing defect

unknown hazards

failure to warn

design defect