A.
China has a land area of 9.6 million sq. km, the third place in the world.
B.
China has a land area of 9.6 million sq. km, marking it the third-biggest country in the world.
C.
China has a land area of 9.6 million sq. km, which was the third place in the world.
D.
China has a land area of 9.6 million sq. km, which ranked the third place in the world.