I recently had to order some text books through Amazon books . They had the best prices anywhere online . Text books can get really expensive so it 's nice if you can get a $ 20 or $ 30 discount .

Question: What happened after they placed an order ?
Answer: They received the discount of $ 20.00Amazon refunded their money because they did not have the textbooks .None of the above choices .Amazon did not apply the discount so the textbooks were full price .