Savanna makes annual contributions in the amount $1500 on average to a traditional ira. she wants to retire and 37 years. she is currently taxed in the 28% tax bracket but anticipates being taxed at 10% in her retirement years. if the average annual rate of return on her account is 6.5% what is the effective value of savannas traditional ira account at retirement? ( show work)

a= $192,710.13
b= $198,582.37
c= $473,646.99