Which of the following is true of ASEAN? 下列关于东盟的哪个选项是正确的?()
A.
China, India, South Korea, and Singapore are among its members. 中国、印度、新加坡成员。
B.
Collectively, the member states account for about 55 percent of world trade.这些成员国加起来占世界贸易的55%左右。
C.
It is slowly progressing toward establishing a free trade zone.中国正在缓慢地向建立自由贸易区迈进。
D.
It has been successful in fulfilling its basic objective of fostering freer trade between member countries. 它成功地实现了促进成员国之间自由贸易的基本目标。