Chris invests $$7,000$ per year over a four year period. The money is used to purchase a stock that has the following prices over the same four year period, $$10\mathrm{.}25,$$$11\mathrm{.}45,$$$8\mathrm{.}44$ and $$5\mathrm{.}88,$ respectively? What is the average cost of the jnvestment?

Multiple Choice

$$8\mathrm{.}45$

$$9\mathrm{.}01$

$$9\mathrm{.}35$

$$9\mathrm{.}89$