You want to use the constant growth model to value the stock of Four Keys, Inc. In order for you to use this model, Four Keys, Inc. needs to have which kind of dividends?

• Dividends that are either constant or change annually at a constant rate

• Dividends that change annually by a constant amount

• Only dividends that increase at a constant rate

• Dividends that change annually by a constant amount or that are zero

• Dividends that change by either a constant amount or a constant rate