Which of the following is an example of semi-strong informational efficiency? 1. You usually make money using the following simple trading rule: if the stock price has risen for the past three days, you sell and if the stock price has fallen for the past three days, you buy 2. Every time your investment adviser privately tells you to buy more shares of Parchyk Ltd., its stock price subsequently goes down and every time they privately tell you to sell some of your shares of Parchyk Ltd., its stock price subsequently goes up 3. You do not make any money when you examine the financial statements of Parchyk Ltd. three months after receiving them and then decide to trade based on what you have seen in the statements 4. You have been studying the trading behaviour of the CEO of Parchyk Ltd. and find that for the past 10 years, 90% of the time Parchyks stock price rises after the CEO buys and 98% of the time the stock price falls after the CEO sells short