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.

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.

Daily closing price of Bitcoin and Nasdaq index (Aug 2019 to Aug 2020) -Bitcoin -NASDAQ 14000 12000 Marry 10000 Ahmen 8000 m 6000 Man 4000 2000 4/07/2019 23/08/2019 12/10/2019 1/12/2019 20/01/2020 10/03/2020 29/04/2020 18/06/2020 7/08/2020 26/09/2020