Which of these cities is located on an island?

Abadan is a city and capital of Abadan County, Khuzestan Province which is located in the southwest of Iran.

It lies on Abadan Island (68 km or 42 mi long, 3–19 km or 2–12 miles wide), the island is bounded in the west by the Arvand waterway and to the east by the Bahmanshir outlet of the Karun River (the Arvand Rood), 53 kilometres (33 mi) from the Persian Gulf, near the Iran–Iraq border.

The civilian population of the city dropped close to zero during the eight years of the Iran–Iraq War (1980–1988). The 1986 census recorded only 6 people. In 1991, 84,774 had returned to live in the city. By 2001, the population had jumped to 206,073, and it was 217,988, in 48,061 families, according to 2006 census. Abadan Refinery is one of the largest in the world. The population today has reached almost 350,000 people.