With reference to the scheme given below, which of the given statement(s) about $\mathrm{T}, \mathrm{U}, \mathrm{V}$ and $\mathrm{W}$ is (are) correct?

• Correct answer
  A

  $\mathrm{T}$ is soluble in hot aqueous $\mathrm{NaOH}$
• B

  $\mathrm{U}$ is optically active
• Correct answer
  C

  Molecular formula of $\mathrm{W}$ is $\mathrm{C}_{10} \mathrm{H}_{18} \mathrm{O}_{4}$
• Correct answer
  D

  V gives effervescence on treatment with aqueous $\mathrm{NaHCO}_{3}$.

Hence, the correct answer is options: 'A', 'C', 'D'.