The constant monthly withdrawal amount can be calculated by using PMT function in excel as in =PMT(rate,nper,pv) where rate = 7% = 0.07/12 (Monthly rate), nper = 20 years = 20*12 = 240 months and pv = 300,000
Constant monthly withdrawal amount =PMT(0.07/12,240,300000)
Constant monthly withdrawal amount = $2,325.90
Constant monthly withdrawal amount = $2,326 (Option C)