26. William P. Bengen would agree with which of the following statements? a. The maximum safe withdrawal rate is approximately 6%. b. The initial maximum safe withdrawal rate increases as the average income tax rate for a portfolio of non-registered assets increases. C. The maximum safe withdrawal rate decreases as the required portfolio longevity increases. d. As the withdrawal rate increases, the probability of a portfolio last 30 years decreases and the length of the shortest longevity scenario increases. 27. Which of the following is an incorrect title for one of the retirement income strategies proposed by Pfau and Cooper? a. Funded ratio management b. Asset allocation C. Bond ladders with longevity insurance d. Income Bucket