A 14-year-old high school football player presents to the emergency room in significant pain after sustaining an injury to his right knee. The patient’s father states that a player on the opposing team tackled his son from the side which led to an audible “pop”. Vitals show mild tachycardia. Examination reveals a significant swelling and tenderness to palpation of the right knee. Which of the following special tests is best utilized to assess for an ACL tear?