In American Society, There Appears to Be a Cultural Norm

In American society, there appears to be a cultural norm about grief that fosters an expectation:​  

A) of rituals signifying that the period of mourning is over. 
B) that the grieving person will be "back to normal" in a short period of time. 
C) of years of counseling in order to fully process the grief. 
D) of a prolonged period of mourning.