William Smith, an Australian investor, has tremendous interests to expand his portfolio from a bunch of Australian stocks to the U.S. index and the Crypto currency. He would like to gain some information and suggestions from you after seeing the graph below. The graph contains both the Bitcoin price and a normal index during the period Aug 2019 to Aug 2020. Daily closing price of Bitcoin and Nasdaq index (Aug 2019 to Aug 2020) -NASDAQ Bitcoin 14000 12000 Mary 10000 when the 8000 Image 6000 4000 2000 4/07/2019 23/08/2019 12/10/2019 1/12/2019 20/01/2020 10/03/2020 29/04/2020 18/06/20207/08/2020 26/09/2020 a. Explain what you could infer from the graph. b. William would like to know more about the Bitcoin and he has confusion on some terms. Please explain the following terms to him: Decentralized, Blockchain. NASDAQ Date Open High Low Adj Close Volume 19/08/2019 8006.1802 8026.75 7895.99 8002.81 1934980000 20/08/2019 7989.3599 8010.58 7948.09 7948.56 1747580000 21/08/2019 8017.0698 8036.94 7998.5 8020.21 1716370000 22/08/2019 8038.79 8048.58 7937.12 7991.39 1777630000 23/08/2019 7943.6499 8005.34 7730.77 7751.77 2207070000 Bitcoin Date Open High Low Adj Close Volume 19/08/2019 10350.283 10916.05 10313.2 10916.05 16038260000 20/08/2019 10916.347 10947.04 10618.96 10763.23 15053080000 21/08/2019 10764.572 10798.73 9962.722 10138.05 19473080000 22/08/2019 10142.521 10233 9831.463 10131.06 17097500000 23/08/2019 10136.31 10442.44 10078.19 10407.96 15627020000