In the first half of 2022, all major economies around world are battling up-rising inflation that has not been seen for almost three decades, caused by the compounded effects of supply chain disruptions during the pandemic, excess liquidity in the capital market and higher commodity prices. Both central banks in the U.S. and Australia have hiked interest rate target aggressively to bring down the inflation. As at 8th June 2022, the 12-month government bond yield of Australia and US are 2.6% p.a. and 2.4% p.a. respectively. For Australian investors who hold an investment asset in US$, if the unhedged return in A$ is -7.9% p.a., what's the return from currency surprise for Australian investors (rounded to one decimal place)? Select one: a. -8.1% b. -7.9% O c. -7.7% d. 0.2% e. None of the above