$8-$ Tech Inc. has an outstanding $6\%$ semi$-$annually coupon bond with a current market price of $$780.$ The bond has a par value of $$1,000$ and a yield to maturity of $6\mathrm{.}7\%.$ How many years is it until this bond matures? A$.27\mathrm{.}12$ B$.3\mathrm{.}92$ C$.22\mathrm{.}19$ D$.7\mathrm{.}84$ E$.44\mathrm{.}38$