A block of mass \(m\) attached to an ideal horizontal spring of spring constant \(k\) oscillates on a frictionless surface with amplitude \(A\) and total mechanical energy \(E_0\). The table below lists the displacement from equilibrium \(x\), kinetic energy \(K\), elastic potential energy \(U\), and total mechanical energy \(E_{\text{total}}\) of the block-spring system at three different states during an oscillation.

State	Displacement	Kinetic Energy	Potential Energy	Total Mechanical Energy
1	\(\dfrac{1}{2}A\)	\(K_1\)	—	\(E_0\)
2	\(x_2\)	\(\dfrac{2}{3}E_0\)	—	\(E_0\)
3	—	\(K_3\)	\(\dfrac{8}{9}E_0\)	\(E_0\)

Which row in the table below correctly identifies the values of \(K_1\), the magnitude of displacement \(|x_2|\), and \(K_3\)?