If the Gordon Model (the "CGDDM" or "Constant Growth Dividend Discount Model") model is to give a meaningful valuation of a stock, which of the following assumptions would not be a valid assumption? Growth, g, is negative There will be no growth, i.e., g is zero. O The growth rate exceeds the required rate of return The required return is exceptionally high (ks > 30%). All of the above are workable assumptions and are valid in the sense that the model can be used even if they hold true