What conclusion can be drawn from the passage?
A.
It would cost the WHO much more to make HIV-positive people start drugs earlier than treating opportunistic infections.
B.
It would finally increase the workforce in the world if HIV-positive people have drugs earlier.
C.
The WHO is confident of affording the cost to have people with HIV start drugs at earlier time.
D.
Half of HIV-positive people in the world are residing in South Africa.