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

Office Expenses	Total				Allocation Basis
Salaries	$	34,000			Number of employees
Depreciation		22,000			Cost of goods sold
Advertising		42,000			Net sales

Item	Drilling			Grinding			Total
Number of employees		600			1,400			2,000
Net sales	$	328,000		$	492,000		$	820,000
Cost of goods sold	$	83,600		$	136,400		$	220,000

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

• $328,000.

• $49,600.

• $16,800.

• $61,200.

• $25,200.