In which sea or ocean are the Chatham Islands, or Rekohu?

Option C

The Chatham Islands is a New Zealand territory, form an archipelago in the Pacific Ocean about 800 kilometres (500 mi) east of the South Island. The archipelago consists of about ten islands within an approximate 60-kilometre (37 mi) radius, the largest of which are Chatham Island and Pitt Island. They include New Zealand's easternmost point, the Forty-Fours. Some of the islands, formerly cleared for farming, are now preserved as nature reserves to conserve some of the unique flora and fauna.

The archipelago is called Rēkohu ("Misty Sun") in the indigenous Moriori language, and Wharekauri in Māori. The Moriori people, indigenous to the Chatham Islands, arrived around 1500 and developed a peaceful way of life.