A Recently Widowed Person Tells Her Grandson,"I Keep Going Over

A recently widowed person tells her grandson,"I keep going over Grandpa's final days and hours.Sometimes I find myself searching for him in the house." Research suggests,this reaction is:

A) normal,especially in the first months of bereavement.
B) normal for the first year after being widowed.
C) abnormal,as it's a sign of being emotionally disturbed.
D) normal,but only among religious widows.