Pregnant Adolescents Have Twice the Mortality Rate of Nonadolescent Expectant

Pregnant adolescents have twice the mortality rate of nonadolescent expectant mothers, because:

A) The fetus is moving around causing abdominal pain.
B) The mother is still growing herself.
C) The mother is gaining weight.
D) Folic acid 1 mg a day should have been started before the pregnancy to reduce neural tube defects.