A student surveyed 200 people in a statistics lecture to find out how many hours per night the class members typically spend sleeping. The data showed a normal distribution with a mean of 6.8 hours and a standard deviation of 0.75 hours. Which percentage of students reported typically getting less than 4.55 hours of sleep per night?

A. 0.15%
B. 0.3%
C. 1.5%
D. 2.5%