Task: Text Completion
Input (English): Sentence1: Carl joined the military right after high school. Sentence2: He signed a short contract that put him on the front lines. Sentence3: His best friend was killed in front of him. Sentence4: Happiness became a foreign concept to Carl. 
 (A) Carl hung out with his best friend when they came home. (B) Carl had to go to therapy for post-traumatic stress disorder.
Output (English): B