The 1982 UN Convention on the Law of the Sea (UNCLOS) prescribes the breadth of TERRITORIAL SEA at:

1. Article 3 UNCLOS 1982: 'Every State has the right to establish the breadth of its territorial sea up to a limit not exceeding 12 nautical miles, measured from baselines determined in accordance with this Convention.' 2. Within the territorial sea: full SOVEREIGNTY of the coastal State (Article 2), subject to innocent passage rights (Articles 17-32). 3. Article 33 — contiguous zone up to 24 nautical miles. 4. Article 57 — Exclusive Economic Zone (EEZ) up to 200 nautical miles, with sovereign rights for exploration and exploitation of natural resources. 5. Articles 76-85 — continental shelf, up to 200 nm or to the outer edge of the continental margin (up to 350 nm in some cases). 6. Hence option B is correct. _Source: UN Charter 1945 / Vienna Convention on Law of Treaties 1969 / Geneva Conventions 1949 / ICJ Statute / UDHR ICCPR ICESCR — UNCLOS 1982, Article 3_