Question: Which part of Argentine's national territory is an ice-covered mountainous island off the coast of Antarctica?

Context paragraphs:
Liard Island: Liard Island is a mountainous island, 13 nmi long, 6 nmi wide and rising to 1000 m , situated in the north-central portion of Hanusse Bay, off the west coast of Graham Land, Antarctica.  It was discovered and named by the French Antarctic Expedition, 1908–10, under Jean-Baptiste Charcot.

Gil Island (Canada): Gil Island is an island on the North Coast of British Columbia, Canada, located on the west side of Whale Channel in the entrance to Douglas Channel, one of the main coastal inlets, on the route of the Inside Passage between Pitt Island and Princess Royal Island.  It is 26 km (16 mi) long, with a width ranging from 6 to 13 km (4 to 8 mi), and an area of 231 km² (89 sq mi).  The only named summit on the mountainous island is Mount Gil, which faces the opening of Douglas Channel.

Chissioua Mtsamboro: Chissioua Mtsamboro, widely known previously as Zamburu Island, also Saddle Island, is an island, about 3 miles off the northwest coast of Mayotte in the Indian Ocean in the Comoros archipelago.  It lies north of the Choazil Islands, just off the coast of Mtsamboro.  This stretch of water is known as the Zamburu Passage, part of the Mozambique Channel.  Chissiou Mtsamboro is a mountainous island covering 2 square kilometres, providing shelter to the main stretch of beach, tucked away in the southwest of the island which contains a main settlement and numerous huts dotted along the beach.  Its highest point reaches an altitude of 273 metres.  The soundings close to the reef which surrounds the island is from 10 to 15 fathoms.

Argentine Antarctica: Argentine Antarctica (Spanish: "Antártida Argentina, Sector Antártico Argentino or Argentártida" ) is a sector of Antarctica claimed by Argentina as part of its national territory consisting of the Antarctic Peninsula and a triangular section extending to the South Pole, delimited by the 25° West and 74° West meridians and the 60° South parallel.  This region overlaps with British and Chilean claims in Antarctica; however, all claims are suspended by the Antarctic Treaty System, of which Argentina is a founding signatory and permanent consulting member, with the Antarctic Treaty Secretariat being based in Buenos Aires.

Bakutis Coast: The Bakutis Coast is that part of the coast of Marie Byrd Land, West Antarctica, extending from a point opposite eastern Dean Island, at , to Cape Herlacher, or between Hobbs Coast in the west and Walgreen Coast in the east.  It stretches between 127°05'W and 114°12'W.  The coast in this area is bounded by several large ice-covered islands and the very extensive Getz Ice Shelf.  This coast was sighted by members of the US Antarctic Service, 1939-41, and was charted in part from air photos taken by Operation Highjump, 1946-47, both expeditions led by Admiral Richard E. Byrd.  The United States Geological Survey completely mapped the coast from ground surveys and U.S. Navy air photos, 1959-66.

Elephant Island: Elephant Island is an ice-covered mountainous island off the coast of Antarctica in the outer reaches of the South Shetland Islands, in the Southern Ocean.  Its name was given by early explorers sighting elephant seals on its shores.  The island is situated 245 km north-northeast of the tip of the Antarctic Peninsula, 1,253 km westsouthwest of South Georgia, 935 km south of the Falkland Islands, and 885 km southeast of Cape Horn.  It is within the Antarctic claims of Argentina, Chile and the UK.  Brazil has a shelter on the island, Goeldi, supporting the work of up to six researchers each during the summer.  and another (Wiltgen), which was dismantled in the summer of 1997/98.

Hughes Island: Hughes Island is a small ice-covered island, the easternmost of the Lyall Islands, lying just to the east of the entrance to Yule Bay, Victoria Land, Antarctica.  This island, along with many other islands within the same geographical bay, was first mapped by the USGS from surveys and U.S. Navy air photos in 1960–63, it was named by US-ACAN for Lieutenant Ronald M. Hughes, medical officer at McMurdo Station in 1966.  This island lies situated on the Pennell Coast, a portion of Antarctica lying between Cape Williams and Cape Adare.

Maria Island: Maria Island is a mountainous island located in the Tasman Sea, off the east coast of Tasmania, Australia.  The 115.5 km2 island is contained within the Maria Island National Park, which includes a marine area of 18.78 km2 off the island's northwest coast.  The island is about 20 km in length from north to south and, at its widest, is about 13 km west to east.  At its closest point, Point Lesueur, the island lies approximately 4 km off the east coast of Tasmania.

Malaita: Malaita is the largest island of the Malaita Province in Solomon Islands.  South Malaita Island, also known as "Small Malaita" and "Maramasike" for Areare speakers and Malamweimwei known to more than 80% of the islanders, is the island at the southern tip of the larger island of Malaita.  A tropical and mountainous island, Malaita's pristine river systems and tropical forests have not been exploited.  Malaita is the second most populous island ( after Guadalcanal ) of the Solomon Islands, with 140,000 people or more than a third of the entire national population.  The largest city and provincial capital is Auki, on the northwest coast and is on the northern shore of the Langa Langa Lagoon.  The people of the Langa Langa Lagoon and the Lau Lagoon on the northeast coast of Malaita call themselves "wane i asi" ‘salt-water people’ as distinct from "wane i tolo" ‘bush people’ who live in the interior of the island.

Anvers Island: Anvers Island or Antwerp Island or Antwerpen Island or Isla Amberes is a high, mountainous island 61 km long, the largest in the Palmer Archipelago of Antarctica.  It was discovered by John Biscoe in 1832 and named in 1898 by the Belgian Antarctic Expedition under Adrien de Gerlache after the province of Antwerp in Belgium.  It lies south-west of Brabant Island at the south-western end of the group.  The south-western coastline of the island forms part of the Southwest Anvers Island and Palmer Basin Antarctic Specially Managed Area (ASMA 7).  Cormorant Island, an Important Bird Area, lies 1 km off the south coast.

Supporting paragraphs: Elephant Island Argentine Antarctica
Answer: Argentine Antarctica