$$On January $1,2016,$ the price of a stock is $42\mathrm{.}50,$ whereas on December $31,2016,$ the price of the stock is $48\mathrm{.}78.$ Determine the capital gain yield of the stock.

a$.13\mathrm{.}25\%$

b$.15\mathrm{.}14\%$

c$.14\mathrm{.}78\%$

d$.17\mathrm{.}49\%$

e$.16\mathrm{.}33\%$