40 Which implementation of the List interface provides for the fastest insertion of a new element into the middle of the list? a. Vector b. ArrayList c. LinkedList d. None of the above 41. Consider the class hierarchy shown below: class FourWheeler implements DrivingUtilities class Car extends FourWheeler class Truck extends FourWheeler class Bus extends FourWheeler class Crane extends FourWheeler Consider the following code below: DrivingUtilities du; FourWheeler fw; Truck myTruck-new Trck du-(DrivingUtilities)myTruck; wnew Crane ); fw -du; 2 Which of the statements below are true? (Choose 2) Choices: a. Line 4 will not compile because an interface cannot refer to an object. b. The code will compile and run C. The code will not compile without an explicit cast at line 6, because going down the hierarchy without casting is not allowed. d.The code at line 4 will compile even without the explicit cast e.The code will compile if we put an explicit cast at ine 6 but will throw an exception at runtime