A line segment $AB$ of length $\lambda$ moves such that the points $A$ and $B$ remain on the periphery of a circle of radius $\lambda$. Then the locus of the point, that divides the line segment $AB$ in the ratio $2:3$, is a circle of radius\\
(1) $\frac{3}{5}\lambda$\\
(2) $\frac{2}{3}\lambda$\\
(3) $\frac{\sqrt{19}}{5}\lambda$\\
(4) $\frac{\sqrt{19}}{7}\lambda$