A certain website claims that Indian worker spends an average of 2117 hours per year. Assume the times are normally distributed, and that the standard deviation is 250 hours. A person is classified as a heavy worker if he or she is in the upper 10 percent. What is the least number of hours per year that makes a worker a heavy worker? Select one: a. 2437 b. 1797 c. 1857 d. 2377