$\mathrm{p}$-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound B. The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is

• A

  
• B

  
• Correct answer
  C

  
• D

  

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