Lucia has just celebrated her one$-$year anniversary at her job. She started investing in the company's $401(k)$ a year ago, and she is curious how her investments have performed. Over the year, she invested a total of $$4,000$ into the $401(k),$ and today her account is worth $$4,700.$ What is Lucia's rate of return?

$17\mathrm{.}5\%$

$7\%$

$117\%$

$14\mathrm{.}9\%$

$23\mathrm{.}2\%$