The correct answer is: B. adjusted historical betas.
Beta is a measure of a stock’s volatility relative to the market. It is calculated by regressing the stock’s returns against the market’s returns. An adjusted beta is a beta that has been adjusted for factors such as changes in the company’s financial structure, changes in the market, and changes in the company’s business.
Historical betas are betas that are calculated using historical data. Adjusted historical betas are betas that are calculated using historical data that has been adjusted for factors such as changes in the company’s financial structure, changes in the market, and changes in the company’s business.
Fundamental historical betas are betas that are calculated using fundamental data, such as the company’s earnings, sales, and book value. Fundamental varied betas are betas that are calculated using fundamental data that has been varied to reflect different assumptions about the company’s future performance.
In conclusion, the correct answer is: B. adjusted historical betas.