Gloria's Preterm Baby, a Participant in the Infant Health and Development

Gloria's preterm baby, a participant in the Infant Health and Development Project, was randomly selected to be in the intervention group. Based on the findings from this longitudinal study, it is likely that Gloria's child

A) had higher intelligence test scores at age three than children who had been placed in the control group
B) had the same incidence of behavioral problems at age three as children who had been placed in the control group
C) did not outperform children in the control group until the age of eight
D) had slightly more advanced language skills at age three and significantly better vocabulary development by age eight