Hydrocarbon $\left(\text{A}\right)$ reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. $\left(\text{A}\right)$ is?

• A

  ${\text{CH}}_3-{\text{CH}}_{\text{3}}$
• B

  ${\text{CH}}_2={\text{CH}}_{\text{2}}$
• C

  $\text{CH}\equiv \text{CH}$
• Correct answer
  D

  ${\text{CH}}_{\text{4}}$

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