According to a Survey of the Top 10 Employers in a Major

According to a survey of the top 10 employers in a major city in the Midwest, a worker spends an average of 413 minutes a day on the job. Suppose the standard deviation is 26.8 minutes and the time spent is approximately a normal distribution. What are the times within which approximately 99.73 percent of all workers will fall?

A) [305.8, 520.2]
B) [386.2, 439.8]
C) [372.8, 453.2]
D) [359.4, 466.6]
E) [332.6, 493.4]