Using standard alphabetical filing rules for business names, which is filed first: 3 Kings Printing; Three Kings Bakery; 30 Pesos Laundry; 12 Stars Trading?

The correct answer is A. 3 Kings Printing

Indexed unit by unit, the filing order is: 3 Kings Printing → 12 Stars Trading → 30 Pesos Laundry → Three Kings Bakery. The name filed first is 3 Kings Printing. Digits come before letters and are filed in numeric order: 3, 12, 30. "Three" written in words is filed under T, after all the numbers.