The equation of a straight line L is x+y=2, and $L_1$ is another straight line perpendicular to L and passes through the point (1/2, 0), then area of the triangle formed by the y-axis and the lines L, $L_1$ is

• A

  $\frac{25}{8}$

• B

  $\frac{25}{16}$

• C

  $\frac{25}{4}$

• D

  $\frac{25}{12}$