Swifty Corporation produces a product that requires $2\mathrm{.}60$ pounds of materials per unit. The allowance for waste and spoilage per unit is $0\mathrm{.}30$ pounds and $0\mathrm{.}10$ pounds, respectively. The purchase price is $$2$ per pound, but a $2\%$ discount is usually taken. Freight costs are $$0\mathrm{.}10$ per pound, and receiving and handling costs are $$0\mathrm{.}07$ per pound. The hourly wage rate is $$12$ per hour, but a raise which will average $$0\mathrm{.}30$ will go into effect soon. Payroll taxes are $$1\mathrm{.}20$ per hour, and employee benefits average $$2\mathrm{.}40$ per hour. Standard production time is $2\mathrm{.}00$ hour per unit, and the allowance for rest periods and setup is $0\mathrm{.}30$ hours and $0\mathrm{.}20$ hours, respectively. The standard direct labor hours per unit is

$2\mathrm{.}50$ hours.

$2\mathrm{.}30$ hours.

$2\mathrm{.}20$ hours.

$2\mathrm{.}00$ hour.