In Timpet Industries V

In Timpet Industries v.Gish,where Gish sued for design defect after he fell from the top rail of a trailer made by Timpet,the state supreme court held that:

A) Timpet was liable because it would have been reasonable for them to make the rail wider and thus safer to walk on
B) Timpet was liable because their warning labels were insufficient
C) Timpet was not liable because Gish worked for them
D) Timpet was not liable because the alleged design defects did not render the trailer unreasonably dangerous
E) none of the other choices are correct