The unit of thermal conductivity is
  • A$\mathrm{J} \mathrm{m} \mathrm{K}^{-1}$
  • B $\mathrm{Jm}^{-1} \mathrm{K}^{-1}$
  • C$\mathrm{W} \mathrm{m} \mathrm{K}^{-1}$
  • D$\mathrm{Wm}^{-1} \mathrm{K}^{-1}$
NEET 2019, Easy
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