You invest $$2,000$ at the end of every year for $7$ years. After $7$ years your total investment is worth $$16,000.$ If your interest rate is compounded monthly, what is your nominal annual interest rate? Round to $2$ decimal points.Select one: a$.1\mathrm{.}14\%$ b$.2\mathrm{.}06\%0.4\mathrm{.}33\%$ d$.3\mathrm{.}12\%$