In the e-reserve article, Financial Advice in the Age of the Coronavirus, in the section Can Your Retirement Be Saved? by Penelope Wang, for those who are in or nearing retirement, as a traditional rule of thumb, how much money should they plan on withdrawing from their investment portfolio in the first year? Select one: a. 3% of their total investment portfolio b. 4% of their total investment portfolio c. 6% of their total investment portfolio d. 8% of their total investment portfolio e. 10% of their total investment portfolio