A 17-year-old basketball player went up for a rebound and inverted his left foot upon landing. He experienced immediate pain and swelling to the ankle. He was taken to the local urgent care where radiographs were taken (Figures A and B). The patient is given crutches and referred to you for further evaluation. On exam, you notice significant swelling and ecchymosis of the left ankle. With the ankle in 10 degrees of plantar flexion, the talus is noted to translate 10mm anterior to the tibia. Which of the following structures in Figure C is most likely injured in this patient?