Match List-$\left(\mathrm{I}\right)$ with List-$\left(\mathrm{II}\right)$.

	List-$\left(\mathrm{I}\right)$		List-$\left(\mathrm{II}\right)$
a	${\mathrm{R}}_{\mathrm{H}}$ (Rydberg constant)	i	$\mathrm{kg} {\mathrm{m}}^{-1}{ \mathrm{s}}^{-1}$
b	$h$ (Planck's constant)	ii	$\mathrm{kg} {\mathrm{m}}^2{ \mathrm{s}}^{-1}$
c	${\mu }_{\mathrm{B}}$ (Magnetic field energy density)	iii	${\mathrm{m}}^{-1}$
d	$\eta$ (coefficient of viscosity)	iv	$\mathrm{kg} {\text{m}}^{-1}{ \mathrm{s}}^{-2}$

Choose the most appropriate answer from the options given below:

• A

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

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

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

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

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