Check all the factors that would be associated with an increase in a firm's price-to-earnings ratio.All the correct factors must be checked.

• Increase in the beta of a firm's stock
• Decrease in the beta of a firm's stock
• Increase in the risk-free rate
• Decrease in the risk-free rate
• Increase in a firm's growth rate of cash flow
• Decrease in a firm's growth rate of cash flow
• Increase in the market risk premium
• Decrease in the market risk premium