The attitude of the author toward Africa's future is

A．it's the biggest problem in Africa and leads to other problems
B．it makes it difficult for individuals and governments to fight the disease
C．the starving people are easier to be infected by AIDS
D．the AIDS pandemic can't afford the treatment because of poverty

A．how the U.N. scientists can help the Africans away from AIDS
B．the three problems that will occur in Africa in the next 20 years
C．how AIDS will impact Africa without effective policies against it
D．the achievements made by the U.N. scientists on AIDS in Africa