Hybridisation of central atom in $\mathrm{NF}_3$ is

• Correct answer
  A

  $\mathrm{sp}^3$
• B

  $\mathrm{sp}$
• C

  $\mathrm{sp}^2$
• D

  $\mathrm{dsp}^2$

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