Year 1 2 3 4Free Cash Flow $12 million $18 million $22 million $26 millionConundrum Mining is expected to generate the above free cash flows over the next four years, after which they are expected to grow at a rate of 6% per year. If the weighted average cost of capital is 12% and Conundrum has cash of $80 million, debt of $60 million, and 30 million shares outstanding, what is Conundrum's expected terminal enterprise value at year 4? A: $413.4 million B: $459.3 million C: $505.3 million D: $528.2 million