Please show the full working on how to arrive on an answer? thanks so much

7. An Australian investor buys some British shares from London Stock Exchange (LSE) and sells them one year later. The exchange rate quotes are the following: Bid Ask T=0 0.5334 /A$ 0.5437 /A$ T=1 0.6457 /A$ 0.6567 /A$ The shares' net return is 15% on LSE over the period. The net return to the Australian investor is: A. 41.58% B. 36.57% C. -3.17% D. -6.59% E. None of the above