for the first week of the month, a manager's operation generated revenue of $120,000. the manager served 2,500 guests, used 156.25 total hours of labor, and had a labor cost of $12,000. the budget for the week was $122,000, budgeted guest volume was 2,700, budgeted hours of 155, and a labor cost of $11,590, how much did the manager actually over/under spend in labor for the week? a. over by $410 b. over by $600 c. under by $410 d. over by $159