4. The conducting rod shown in the following figure has length L and is being pulled along horizontal frictionless conducting rails at a constant velocity v. The rails are connected at one end with a metal strip. A uniform magnetic field B, directed out of the page, fills the region in which the rod moves. Assume that L = 10 cm, v = 5.0 m/s, and B = 1.2 T. Assume that the resistance of the rod is 0.40 Ω. Which of the following statements are correct?

(A) The magnitude of the emf induced in the rod is 1.20 Volt.
(B) The direction of the current in the conducting loop is counter clockwise.
(C) The current in the conducting loop is 1.5 A.
(D) To keep the rod moving at constant velocity, therefore, a rightward force must be continuously supplied to the rod.
(E) To keep the rod moving at constant velocity, therefore, a 0.18 N external force must be continuously supplied to the rod.