Jerry's Used Autos will sell you a $2010WW$ Jetta for $$5,000$ with no money down, if you make weekly payments of $$80\mathrm{.}00$ for two years, beginning one week after you buy the car. What is the effective annual rate $($EAR$)$ of this loan?

$25\mathrm{.}3\%$

$50\mathrm{.}5\%$

$91\mathrm{.}0\%$

$74\mathrm{.}13\%$

$65\mathrm{.}0\%$