Consider the following statements

$I.{\left|\psi \right|}^2$ is a measure of electron density at a point in an atom

$II.$Radial probability function $(=4\pi r^2{R}^2{\psi }^2)$ gives the probability of finding the electron at a distance $r$ (atomic radius) from the nucleus regardless of direction

$III.$ The shape of an orbital is defined as a surface of constant probability density that encloses some large fractions of the probability of finding the electron 

Select the correct statements

$I. {\left|\psi \right|}^2$ is a measure of electron density at a point in an atom. Thus, the statement is correct

$II.$Radial probability function $4{\pi }^2{R}^2{\psi }^2$ gives the probability of finding the electron at a distance $r$ from the nucleus regardless of direction. Thus, the statement is correct

$III.$The shape of an orbital is defined as a surface of constant probability density that encloses some large fractions of the probability of finding the electron. Thus, the statement is correct.