John owned a Ford truck with a snowplow attached. John's best friend Mary asked him to plow the snow from her driveway, which he did. John started salting the driveway in order to melt the remaining ice, but he was distracted that day because his favourite football team was playing. He forgot to salt the walkway between Mary's house and her vehicle in the driveway. Later, Mary slipped on the walkway, severely injuring her hip.Discuss whether John can be successfully sued for negligence by Mary. You must explicitly reference each of the four elements of negligence.Further, when doing the Duty of Care analysis, you should specifically reference to the three-part test in a Duty of Care analysis, explain whether John owes Mary a duty of care.