Your aunt has $$570,000$ invested at $5\mathrm{.}5\%,$ and she now wants to retire. She wants to withdraw $$45,000$ at the beginning of each year, beginning imediately. She also wants to have $$50,000$ left to give you when she ceases to withdraw funds from the account. For how many years can she make the $$45,000$ withdrawals and still have $$50,000$ left in the end?

a$.11\mathrm{.}56$ years

b$.19\mathrm{.}05$ years

c$.20\mathrm{.}00$ years

d$.21\mathrm{.}10$ years

e$.20\mathrm{.}17$ years