3. The following questions are based on the attached article ("A Working Model"). In the past few years, there have been lower interest rates and higher output globally. The article explores possible reasons for this phenomenon. A. Suppose there has been an increase in global savings (or more precisely 'savings increases relative to investment'). Show the effect on the lS-LM diagram (which curve would be affected and why). Wiat happens to interest rates (yields) and output