Which of the Following Is Correct with Respect to the BRIC

Short Answer

Which of the following is correct with respect to the BRIC countries?
Russia is the dominant country in the group.
There is very little coordination between the BRIC countries, and they do not act like a unit.
All of the BRIC countries put a heavy emphasis on exporting commodities.
In terms of opportunities and optimism, Brazil leads this group.
Brazil is the most corrupt of the BRIC nations.