The following charts display the share price of four companies over time. Each chart plots the price reaction to a positive earnings announcement by each of the four companies that occurs on the event date. The event date is the vertical line half way across the chart. There is no other publicly available information released in the timeframe that would affect any of the company's share price. For each company, discuss whether its share price exhibits an efficient or inefficient price response to the positive earnings announcement and why you reach this conclusion. Company A Company B Date Date Price ($) Price ($) Event Date Company C Event Date Date Price ($) Price ($) Event Date Company D Event Date Date The following charts display the share price of four companies over time. Each chart plots the price reaction to a positive earnings announcement by each of the four companies that occurs on the event date. The event date is the vertical line half way across the chart. There is no other publicly available information released in the timeframe that would affect any of the company's share price. For each company, discuss whether its share price exhibits an efficient or inefficient price response to the positive earnings announcement and why you reach this conclusion. Company A Company B Date Date Price ($) Price ($) Event Date Company C Event Date Date Price ($) Price ($) Event Date Company D Event Date Date