Kathleen invests $$115$ with Mr$.$ Madoff, her accountant. Mr$.$ Madoff promises that the account will pay $6$ percent simple interest each year. How much money will Kathleen have at the end of $4$ years?

Multiple Choice

$$135\mathrm{.}70$

$$145\mathrm{.}18$

$$136\mathrm{.}97$

$$149\mathrm{.}50$