In a study of the tooth-brushing habits of a large number of dental patients, it was observed that time spent brushing teeth each day was Normally distributed, with a mean of 240 seconds and a standard deviation of 50 seconds. A patient who spends 180 seconds brushing their teeth each day is at the _____ percentile in this distribution.

A. 4.46

B. 8.08

C. 42.07

D. 27.42

E. 11.51