Match List$‐\mathrm{I}$ (Experiment performed) with List$‐\mathrm{II}$ (Phenomena discovered/associated)and select the correct option from the options given below the lists

	List-I		List-II
$\left(\mathrm{a}\right)$	Davisson and Germer experiment	$\left(\mathrm{i}\right)$	Wave nature of electrons
$\left(\mathrm{b}\right)$	Millikan's oil drop experiment	$\left(\mathrm{ii}\right)$	Charge of an electron
$\left(\mathrm{c}\right)$	Rutherford experiment	$\left(\mathrm{iii}\right)$	Quantisation of energy levels
$\left(\mathrm{d}\right)$	Franck-Hertz experiment	$\left(\mathrm{iv}\right)$	Existence of the nucleus

• A

  $\left(\mathrm{a}\right)‐\left(\mathrm{iii}\right)$, $\left(\mathrm{b}\right)‐\left(\mathrm{iv}\right)$, $\left(\mathrm{c}\right)‐\left(\mathrm{i}\right)$, $\left(\mathrm{d}\right)‐\left(\mathrm{ii}\right)$
• Correct answer
  B

  $\left(\mathrm{a}\right)‐\left(\mathrm{i}\right)$, $\left(\mathrm{b}\right)‐\left(\mathrm{ii}\right)$, $\left(\mathrm{c}\right)‐\left(\mathrm{iv}\right)$, $\left(\mathrm{d}\right)‐\left(\mathrm{iii}\right)$
• C

  $\left(\mathrm{a}\right)‐\left(\mathrm{iv}\right)$, $\left(\mathrm{b}\right)‐\left(\mathrm{iii}\right)$, $\left(\mathrm{c}\right)‐\left(\mathrm{ii}\right)$, $\left(\mathrm{d}\right)‐\left(\mathrm{i}\right)$
• D

  $\left(\mathrm{a}\right)‐\left(\mathrm{i}\right)$, $\left(\mathrm{b}\right)‐\left(\mathrm{ii}\right)$, $\left(\mathrm{c}\right)‐\left(\mathrm{iii}\right)$, $\left(\mathrm{d}\right)‐\left(\mathrm{iv}\right)$

Hence, the correct answer is option: 'B'.