单选题 Which of the following is NOT an assumption of the constant growth dividend discount model (DDM)?
A. The growth rate of the firm is higher than the overall growth rate of the economy.
B. ROE is constant.
C. Dividend payout is constant.

【正确答案】 A
【答案解析】Other assumptions of the DDM are: dividends grow at a constant rate and the growth rate continues for an infinite period.