Which Person Would Be More at Risk for Developing Prolonged

Which person would be more at risk for developing prolonged grief or long-term grief-related problems?

A) 65-year-old Mrs. Carter, whose husband died
B) 8-year-old Billy, who knew his dog was ill and in danger of dying
C) 16-year-old Susan, whose mother died
D) 45-year-old Mr. Perez, whose mother died of breast cancer