The molecule that has the smallest bond angle (X-M-X), where $X$ is a halogen and $M$ is the central atom, is

• A

  $\mathrm{PI}_3$
• B

  $\mathrm{AsI}_3$
• C

  $\mathrm{SbI}_3$
• Correct answer
  D

  $\mathrm{SbBr}_3$

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