Let A and B be two sets in the universal set. Then $\mathrm{A}-\mathrm{B}$ equals

• A

  $\mathrm{A}\cap {\mathrm{B}}^{\mathrm{c}}$

• B

  ${\mathrm{A}}^{\mathrm{c}}\cap \mathrm{B}$

• C

  $\mathrm{A}\cap \mathrm{B}$

• D

  None of these