Jessica Salas, president of Salas Products, is reviewing the warranty policy for her 4 company's new model of automobile batteries. Life tests performed on a sample of 100 batteries indicated: (1) an average life of 75 months, (2) a standard deviation of 5 months, and (3) a bell-shaped battery life distribution. Approximately 68% of the batteries will last between ________________. A) 70 and 80 months B) 60 and 90 months C) 65 and 85 months D) 55 and 95 months