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

The product of speed of electron and the principal quantum number  $\alpha z^2$

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

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

Coloumbic force of attraction on the electron  $\alpha \frac{z^3}{n^4}$