Moment of Inertia & Radius of Gyration question from JEE Main 2023 (25 Jan, Shift 1)

$I_{\text{CM}}$ is the moment of inertia of a circular disc about an axis (CM) passing through its center and perpendicular to the plane of disc. $I_{\text{AB}}$ is its moment of inertia about an axis AB perpendicular to plane and parallel to axis CM at a distance $\frac{2}{3}$ R from center. Where R is the radius of the disc. The ratio of $I_{\text{AB}}$ and $I_{\text{CM}}$ is $x : 9$. The value of $x$ is _____________.