According to Bohr’s atomic theory, which of the following relation is/are correct?

The product of speed of electron and the principal quantum number  $\alpha {\text{\hspace{0.17em}z}}^2$

Frequency of revolution of the electron in an orbit  $\text{α}\frac{{\text{z}}^{\text{2}}}{{\text{n}}^{\text{3}}}$

Kinetic energy of electron   $\text{α}\frac{{\text{z}}^{\text{2}}}{{\text{n}}^{\text{2}}}$

Velocity of electron  $\propto \frac{z}{n}$