On page 323, it showed that Ares wasn't sure of the answers that Percy was asking him. Ares is a god of war, so everything he does, he does in full confidence, however in this case he struggles to answer the question.
Explanation:
I think the question is wrong. Sorry if I am wrong!
But It should have been "You cannot get a refund ________ sale goods."
In this case the answer should have been ON.
Anyway the answer is ON.
Answer: Slaves were whipped for falling short of their cotton picking quotas.
Explanation: This answer can be found in Chapter 13 of <em>"From twelve years a slave"</em>
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