By 2010 the U.S Census Bureau expects life expectancy in the tow southern African countries of Botswana and South Africa to be ?

A. 30 to 40 years, about the same as in 1995
B. 30 to 40 years, a fall of more than 10 years from 1995
C. 50 to 60 years, about the same as in 1995
D. 70 years, an increase from 1995