Which of the Following Views Might Affect How an Economist

Multiple Choice

Which of the following views might affect how an economist formulates ideas about self-interest?  

A)  People who choose to promote the interests of others cannot be acting rationally in their own self-interest. 
B)  People show concern only for those whom they know personally. 
C)  The notion of self-interest rules out concern for others. 
D)  Concern for the welfare of others is consistent with the concept of self-interest.