How would you get to beta in the cost of equity calculation?

• Set beta to exactly 1, since over time most companies simply converge toward the market's overall volatility
• Take comparables' betas, unlever them, take the median, then relever at the target's capital structure
• Take the median comparable beta and use it as-is, without ever relevering it to the target's capital structure
• Use the company's own revenue growth rate as its beta, since faster growth means more market sensitivity
• Use the target's own raw regression beta directly, since it already reflects that one specific company's risk