geller's infant son is injured when his head gets caught in between the slats of his crib. geller sues the crib manufacturer for product liability alleging that the crib was negligently designed. The crib manufacturer claims that it cannot be liable because it complied with federal law regarding the design for the crib. this arguent is an example of the defense of$?$ A$.$ product misuse. B$.$ obvious risk. C$.$ preemption. D$.$ assumption of the risk.