Arthur Negligently Stopped His Car on the Highway

Arthur negligently stopped his car on the highway.Betty,who was driving along,saw Arthur's car in sufficient time to attempt to stop.However,Betty negligently put her foot on the accelerator instead of the brake and ran into Arthur's car.If Arthur sues Betty for damages:

A) Arthur's contributory negligence will prevent his recovery from Betty in all jurisdictions.
B) Betty had the last clear chance to avoid the accident and will bear full legal responsibility for it.
C) Arthur has assumed the risk of the accident.
D) because both parties were negligent,in a state that follows the modified comparative negligence doctrine,both parties will share the liability for their injuries in proportion to their degree of fault unless the court finds Arthur's contributory negligence was as great as or greater than Betty's negligence.