4. The Argentine peso has been steadily depreciating against the US dollar, but the government wishes to stop the depreciation. Please answer each question concisely in one or two sentences. a. What must the Banco Central De La Republica Argentina do to stabilize the exchange rate? b. Is there a limit to the central bank's ability to stop the depreciation of the peso by intervention in the foreign exchange markets? 5. Suppose Saudi Arabia wishes to peg the Saudi riyal (SAR) to the US dollar at $0.25/SAR. Because of foreign funds flowing into SA, the SAR appreciates. a. How can the Saudi Arabian Monetary Authority (Saudi's central bank) keep the SAR from appreciating and maintain the pegged exchange rate? b. Is the Saudi central bank limited by its foreign exchange holdings in maintaining the peg