The Davisson-Germer experiment is the direct evidence of

The wave nature of electrons was experimentally verified by,

The wave property of electrons implies that they will show diffraction effects. Davisson and Germer demonstrated this by diffracting electrons from crystals. The law governing the diffraction from a crystal is obtained by requiring that electron waves reflected from the planes of atoms in a crystal interfere constructively (see figure).

In the Davisson-Germer experiment,which is the correct curve between the intensity $(I)$ of scattered electrons and the scattering angle $(\phi)$?

In the Davisson-Germer experiment,when electrons strike a $Ni$ crystal,which of the following waves are diffracted?

Given below are two statements :-
Statement $I$ : Davisson-Germer experiment establishes the wave nature of electrons.
Statement $II$ : If electrons have wave nature,they can interfere and show diffraction.
In the light of the above statements,choose the correct answer from the options given below: