The stereoisomers that are formed by electrophilic addition of bromine to $\mathrm{trans}-\mathrm{but}-2-\mathrm{ene}$ is/are :

• Correct answer
  A

  $2$ identical mesomers
• B

  $2$ enantiomers
• C

  $2$ enantiomers and $2$ mesomers
• D

  $1$ racemic and $2$ enantiomers

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