Adam Has Two Children,Bob (The Eldest)and Carol,both of Whom Predecease

Multiple Choice

Adam has two children,Bob (the eldest) and Carol,both of whom predecease Adam. Bob is survived by a daughter,Dina,and Carol by two sons,Ed and Fred. On Adam's death,if the estate is distributed per stirpes

A) Dina will receive the entire estate.
B) Dina will receive one-half of the estate,and Ed and Fred will each receive one-fourth.
C) each grandchild will receive one-third of the estate.
D) the grandchildren will not receive anything.