A．Environment ministers of developed countries．
B．Environment ministers of developing countries．
C．Environment ministers of G8．
D．Environment ministers of G8, developed countries, and developing countries．

A．2008．
B．2010．
C．2012．
D．2020．

A．3,000 dollars．
B．20,000 dollars．
C．1,000,000 Indian rupees．
D．100,000 Indian rupees．