A home nurse visiting program of short-term support lasting from birth through the infant's second ...

A home nurse visiting program of short-term support lasting from birth through the infant's second birthday was studied for long-term effects. The results demonstrated which of the following?
 
  A. At age 15, their children were becoming well-adjusted young adults.
  B. Although successful at preventing second pregnancies, the cost was too high for the benefit.
  C. Intervention was too short to have any lasting effects that could be measured.
  D. Support from a nurse is, by itself, insufficient to create long-term improvements.