l. (1 point) A woman at a point A on the shore of a circular lake with radius r = 4 wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can walk at the rate of 10mph and row a boat at 5mph. E What is the shortest amount of time it would take her to reach point C? hours What is the longest amount of time it would take her to teach point C following a path like the path in the gure? hours