If $\mathrm{A}=\left\{2,3,4,8,10\right\}, \mathrm{B}=\left\{3,4,5,10,12\right\}, \mathrm{C}=\left\{4,5,6,12,14\right\}$then $\left(\mathrm{A}\cap \mathrm{B}\right)\cup (\mathrm{A}\cap \mathrm{C})$ is equal to

• A

  $\left\{3,4,10\right\}$

• B

  $\left\{2,8,10\right\}$

• C

  $\left\{4,5,6\right\}$

• D

  $\{3,5,14\}$