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, making 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.