Grod listed Question 7 Derine "Purchasing Power Parity"? Under what conditions should PPPhold? Does PPP. hold in the short run? In the long, run? Why, or Whir not? In 1986, the Economist invented the Big Mac Index. What does this inclex refer to, and how can we use this Index? Wour response should include the answers to all questions. Be specifici vou can use bullet points to answer the questions to save time. Bot ensuer I will woderstand what you plan to say