An equiangular octagon has four sides of length 1 and four sides of length \sqrt{2} / 2, arranged so that no two consecutive sides have the same length. What is the area of the octagon?
Answer Choices
A. \dfrac{7}{2}
B. \dfrac{7 \sqrt{2}}{2}
C. \dfrac{5+4 \sqrt{2}}{2}
D. \dfrac{4+5 \sqrt{2}}{2}
E. 7