A Rhode Island state statute imposes fines on tire repair businesses whose pneumatic equipment does not include automatic shut-off switches to protect employees. Bob’s Brakes & Tires, Inc., does not have the switches on its equipment. Carter, a Bob’s employee, suffers an injury that a shut-off switch would have prevented. Carter’s best theory for recovery is

a. assumption of risk.
b. a dram shop act.
c. a Good Samaritan statute.
d. negligence per se.