C. An island is at point A, 4 km offshore from the nearest point B on a straight beach. A tourist on the island wishes to go to a point C, 12 kilometers down the beach from B. The tourist can rent a boat for GBD per kilometer and travel by water to a point P between B and C, and then he can hire a car with a driver at a cost of 3BD per kilometer and travel a straight road from P to C. A A 'z'-. ; 1. Find (x) the least expensive route from point A to point C. (5marks) 2. Cost of the least expensive route from point A to point C. (5marks)