Galena has finally handed in her resignation to her long-time employer the Royal Bank of Canada (RBC) and told them the reason was that she was retiring. Galena has been looking to retire for some time. She currently lives with her daughter and as a result, has minimal expenses. The only thing that has made her hesitate is that she is unsure of how long her hard-earned savings will last but knows that she needs $600/ month to cover her expenses. At an interest rate of 6%, compounded monthly, how many months will her money last? Select one: a. 176 months b. 173 months c. 243 months d. 183 months e. 270 months