Which of the following is not a contentious case of injury or illness covered under workers compensation?$$

Group of answer choices

$$Injuries occurring when the employee is $$on the road,$$ especially if the trip began from the employee$$s home.

$$Injuries resulting from faulty design of the machinery used in the production floor.

$$An employee killed by a stranger when the employee is on a vacation.

$$Chronic illnesses such as lung disease, especially if contributing factors include workplace hazards $($e$.$g$.,$ dust$)$ in combination with personal behavior $($e$.$g$.,$ smoking$).$