Which of the following statements about adolescent health and well-being is TRUE?

A) Adolescent health and well-being have improved in all areas.
B) More adolescents around the world die of malnutrition today than at any time in the past.
C) More adolescents around the world die of infectious diseases today than at any time in the past.
D) Extensive increases in the rates of HIV in adolescents have occurred in many sub-Saharan countries.