Marks Corporation has two operating departments, Drilling and Grinding, and an office. The three categories of office expenses are allocated to the two operating departments using different allocation bases. The following information is available for the current period:

Office Expenses	Total	Allocation Basis
Salaries	$ 42,000	Number of employees
Depreciation	30,000	Cost of goods sold
Advertising	64,000	Percentage of total sales

Department	Number of employees	Sales	Cost of goods sold
Drilling	1,200	$ 370,000	$ 125,400
Grinding	1,800	555,000	204,600
Total	3,000	$ 925,000	$ 330,000

The amount of the advertising cost that should be allocated to Drilling for the current period is:

$25,600.

$83,400.

$38,400.

$370,000.

$90,600.