How can I solve my following problem? Please suggest me the correct answer.
Explain reason Self interest is evident while: (i) A mugger utilizes a $1 bullet upon his victim to take $100 by his wallet. (ii) Helen creates a $100 donation to her favorite charity. (iii) At the espresso cart you buy a cup of coffee. (iv) A miser hides all her money within a mattress. (v) All of the above.