Consider the Python function below which calculates the present value of a perpetuity (dividend) using the Dividend Discount Model (DDM). What does D / k represent in the context of stock valuation? def calculate perpetuity_value (D, k): return D / k The initial dividend to be paid next year. The value of the stock assuming a perpetual growth rate equal to the discount rate k. The value of the stock assuming a zero-growth rate and constant dividend D. The total dividend payout over an infinite time horizon.