The following are beta's for a Microsoh during four time periods. Compare the four estimated betas. What do you conclude about how Microsoft's exposure to systematic risk has changed over thet 20-year period? What do you think explains the change? 1.6667 1987-1991: 1992-1996: 0.8529 1.5712 1997-2001: 2002-2008 0.9508 Which of the following statements is truo? (Select the best choice below) A. Microsoft's systematic risk decreased in the early 1990s as Microsoft estabished itself as the dominant operating system company, but increased during the internet bubble in the late 1990s (when tach stocks were soaring). It has since decreased O B. Microsoft's systematic risk decreased in the early 1990s as Microsoft established inelf as the dominant operating system compary, but increased during the Internet bubble in the late 1990s (when toch stocks were soaring). It has since increased OC. Microsoft's systematic risk increased in the early 1990s as Microsoft established itself as the dominant operating system company, but increased during the Internet bubble in the late 1990s (when toch stocks were soaring. It has since decreased OD. Microsoft's systematic risk decreased in the early 1990s as Microsoft established itself as the dominant operating system company, and decreased during the Intemel bubble in the late 1990s (when toch stocks were soaring). It has since increased