Which of the following is both a continent and a country?

Which of the following is both a continent and a country?

مندرجہ ذیل میں سے کون براعظم اور ایک ملک ہے؟
Explanation

The smallest Continent (by Area) of the World is Australia.

Australia lies in the southern hemisphere of the earth.

Australia is called the Island continent.

Australia is surrounded by oceans and seas on all sides.

Australia shares its part with the Indian ocean as well as the largest Pacific Ocean.