You are given the following information: Nominal effective AUD/USD exchange rate index at end of 2019 98.15 (based on 100.00 at end of 1999) Australian CPI at end of 2019(based on 100 at end of 1999) 100 US CPI at end of 2019 (based on 100 at end of 1999) 100 Calculate the real effective AUD/USD exchange rate index at end of 2019. 91.64 89.33 88.13 98.15