A small island has \frac25 of its surface covered by forest and \frac14 of the remainder of its surface by sand dunes. The island also has 90 hectares covered by farm land. If the island is made up of only forest, sand dunes and farm land, what is the total area of the island, to the nearest hectare?
Answer Choices
A. 163
B. 120
C. 200
D. 138
E. 257