Need help with 2,3

Use the following information to answer the next question. In the construction of large buildings, powerful cranes are used to lift concrete and steel compounds, at a constant speed, to the top of the building being constructed. Ignoring the initial acceleration of the object lifted, which one of the following statements about the lifting done by the crane is incorrect? A. Work is done during the lift. B. Mechanical energy is transferred, C. Potential energy changes occur to the object being lifted. D. Kinetic energy changes occur to the object being lifted. OA OB OC D Question 3 A force of 40.0 N is applied to a rope that makes an angle of 60.0 to the horizontal An object attached to the rope moves horizontally along a frictionless surface a distance of 5.00 m. How much work is done? A. 50.0 J B. 100 J C. 200 J D. 400 J