In the Context of a Person Choosing Whether to Attend

In the context of a person choosing whether to attend college or go to work, which of the following best describes the expenses associated with room and board?  

A)  Room and board is an opportunity cost of attending college because it is subsidized by the government or by the college. 
B)  Room and board is an opportunity cost of attending college because it involves cash expenditures. 
C)  Room and board is NOT an opportunity cost of attending college if the student is on a scholarship. 
D)  Room and board is NOT usually part of the opportunity cost of attending college because a person requires a place to live and food to eat whether or NOT attending college.