Please give the proper explanation of the solution with the mathematics including answering the question!
As a member of UVic’s University Club, I pay $30 per month in membership fees. In a typical month, I spend about $50 on beer at the Club. Every month I also have the option of attending a meeting of the whiskey club (open only to Club members), at a cost per meeting of $15, payable at the beginning of each meeting. Given this, what do my monthly SUNK COSTS equal?
a) $15.
b) $30.
c) $45.
d) $95.