Using standard alphabetical filing rules for business names, which is filed second: Bayanihan Credit Coop; Bayan Pharmacy; Bayani Store; Bayan Trading?

The correct answer is D. Bayan Trading

Indexed unit by unit, the filing order is: Bayan Pharmacy → Bayan Trading → Bayani Store → Bayanihan Credit Coop. The name filed second is Bayan Trading. The two "Bayan" names come first (Pharmacy, then Trading), followed by "Bayani" and "Bayanihan" by nothing before something.