Inwhich one of the following groups are all the four countries members of G20?

1. A

   Argentina, Mexico, South Africa and Turkey

   Argentina, Mexico, South Africa, Turkey. All four are G20 members.

2. B

   Australia, Canada, Malaysia and New Zealand

   Australia, Canada, Malaysia, New Zealand. Malaysia and New Zealand are not G20.

3. C

   Brazil, Iran, Saudi Arabia and Vietnam

   Brazil, Iran, Saudi Arabia, Vietnam. Iran and Vietnam are not G20.

4. D

   Indonesia, Japan, Singapore and South Korea.

   Indonesia, Japan, Singapore, South Korea. Singapore is not G20.

Summary. Official key is (a). Argentina, Mexico, South Africa and Turkey are G20 members. Malaysia, New Zealand, Iran, Vietnam and Singapore are the traps in the other lists.