What can we infer from the last paragraph of the text?
A.
With the UN's support, Trade at Hand is bound to spread to the whole African continent
B.
Aid projects played an important role in fostering mobile-phone market-places in Africa
C.
TradeNet is the most successful one of all the mobile-phone market-places in Africa.
D.
The junk mail by mobile phone will ruin the economic development in Africa.