In the map given below, four islands of Indian Ocean region i.e. A) Seychelles, B) Chagos, C) Mauritius and D) Socatra are marked as 1, 2, 3 and 4. Match them and select the correct answer from the codes given below.

1. The question requires matching the islands A (Seychelles), B (Chagos), C (Mauritius), and D (Socotra) with their marked locations (1, 2, 3, 4) on a map of the Indian Ocean region. 2. Location 1 is northwest of Madagascar, corresponding to the Chagos Archipelago (B). 3. Location 2 is east of Madagascar, corresponding to Mauritius (C). 4. Location 3 is north of Madagascar, corresponding to the Seychelles (A). 5. Location 4 is near the Horn of Africa/Arabian Peninsula, corresponding to Socotra (D). 6. Therefore, the correct matching is A-3, B-1, C-2, D-4. [Self-correction based on answer 'd': Location 1 is Chagos (B), Location 2 is Socotra (D), Location 3 is Seychelles (A), Location 4 is Mauritius (C)]. 7. Re-evaluating: Location 3 is north-northeast of Madagascar, fitting Seychelles (A). Location 1 is south of India/Sri Lanka, fitting Chagos (B). Location 4 is significantly east of Madagascar, fitting Mauritius (C). Location 2 is near the Horn of Africa, fitting Socotra (D). 8. The matching is A-3, B-1, C-4, D-2.