The alkenes which exhibit cis, trans isomerism from the following are a) $\mathrm{YXC}=\mathrm{CXZ}$ b) $\mathrm{X}_2 \mathrm{C}=\mathrm{CX}_2$ c) $\mathrm{YXC}=\mathrm{CXY}$ d) $\mathrm{YXC}=\mathrm{CWZ}$ e) $\mathrm{X}_2 \mathrm{C}=\mathrm{CXY}$

• A

  $\text {b, d, e }$
• B

  $\text {a, b }$
• Correct answer
  C

  $\text {a, c, d }$
• D

  $\text {c, d, e }$

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