Given a DB context object named context that has a DbSet property named Customers, which of the following returns a list of Customer objects sorted by last name?
a. context.Customers.OrderBy(c => c.LastName).ToList()
b. context.Customers.SortBy(LastName).ToList()
c. context.Customers.OrderBy(c => c.LastName)
d. context.Customers.SortBy(LastName)
