Select correct statements regarding $\sigma and\pi$  bonds:

$\sigma -$ bond lies on the line joining the nuclei of bonded atoms

$\pi -$ electron cloud lies on either side to the line joining the nuclei of bonded atoms

The order of the strengths of different types will be  $\sigma >\pi >\delta$

$\sigma -$ bond has primary effect to decide direction of covalent bond, which $\pi -$ bond has no primary effect in direction of bond.