Research Conducted to Assess Language Acquisition in Early and Late

Research conducted to assess language acquisition in early and late second-language learners has reported which of the following findings?

A) The same brain areas are involved in processing speech in bilinguals, regardless of when they acquired their second language.
B) Increases in brain density are observed in the left parietal lobe in late bilinguals who acquired their second language between 10 and 15 years of age.
C) Chinese children who were adopted by French families before 2 years of age and learned French as a first language lagged behind their French-speaking peers.
D) Bulgarian children adopted into Norwegian homes showed increases in the density of their grey matter if the adoption occurred after the age of 5-years.