The one-mile running time for female high-school athletes in Maine, US can be modeled according to the normal distribution with an average of 6.9 minutes (that is, 6 minutes and 54 seconds) and a standard deviation of 0.35 minutes (or equivalently, 21 seconds). Among this group of athletes, the 8% slowest will be placed under additional trainings. What is the cut-off time (in minutes and seconds) for the 8% slowest runners? o 6 minutes and 24 seconds o 7 minutes and 33 seconds o 7 minutes and 40 seconds o 7 minutes and 24 seconds o 6 minutes and 39 seconds