The pediatric services department is not pleased with the quality of cleaning done by housekeeping and decides to hire a janitor who works exclusively in the pediatric services department.As a result the number of housekeeping hours used by pediatric services goes to zero.How will this change the amount of housekeeping cost allocated to pediatric services if "patient service revenue" is the cost driver?How will the staffing change affect the housekeeping allocation to pediatric services if "housekeeping hours" is the cost driver?