Q1. In the context of WTO trade rules and the January 2026 Canada–China preliminary arrangement, the term 'Most-Favoured-Nation (MFN) tariff' most precisely refers to:
- A. the standard tariff rate that a WTO member applies to imports from any other WTO member, on a non-discriminatory basis
- B. a preferential concessional tariff offered exclusively to a country's single largest trading partner
- C. a special tariff slab reserved only for imports originating in 'non-market economies'
- D. a punitive duty imposed on imports found to be subsidised by the exporting government