All else equal, an increase in a company's growth rate will most likely cause its P/E ratio to:（）

单项选择题Dot-com companies are often valued by applying the （） ratio.

A. Price/Sales.
B. Price/Earnings.
C. Price/Cash Flow.

单项选择题A stock has a required rate of return of 15%, a constant growth rate of 10%, and a dividend payout ratio of 45%. The stock's price-earnings ratio should be:（）

A. 3.0 times.
B. 9.0 times.
C. 4.5 times.