Answer:
Option B => It is common practice to estimate beta based on the expectations of future correlations and volatilities.
Step-by-step explanation:
Option B is the correct answer that is, ''It is common practice to estimate beta based on the expectations of future correlations and volatilities".
To a layman or scientist, Beta means a Greek word but come to Economics and financial accounting, beta is something related to stock.
Beta is mainly used in the Calculation or determination of risk associated with a particular stock. The Calculations of the fluctuations of stocks in market is what is known as Beta. The predictive Vale of Beta is limited therefore,it is based on past infomation.