You purchase a $30-$ year, zero $-$ coupon bond for a price of $$35.$ The bond will pay back $$100$ after $30$ years and make no interim payments. The annual compounded return $($geometric

average return$)$ on this investment is

A$.3\mathrm{.}42\%$

B$.3\mathrm{.}6\%$

C$.3\mathrm{.}06\%$

D$.4\mathrm{.}32\%$