Mathematics
The area (in square units) of the region enclosed by the ellipse $x^2+3y^2=18$ in the first quadrant below the line $y=x$ is
A
$\sqrt3\pi$
B
$\sqrt3\pi +\frac{3}{4}$
C
$\sqrt3\pi - \frac{3}{4}$
D
$\sqrt3\pi +1$
Select an option to instantly check whether it is correct or wrong.
