_10. What does Arrow's Impossibility Theorem state?
a) Dividing a number by 0 is not a well defined operation, and is therefore impossible.
b) The winning candidate in an election can never have less than half of the first-place votes.
c) A voting method that is guaranteed to always produce fair outcomes cannot exist.
d) In an election, no two candidates can receive votes in such a way as to form a tie.