Statement I: De Morgan's theorem $\overline{\mathrm{A}+\mathrm{B}}=\overline{\mathrm{A}}.\overline{\mathrm{B}}$ be explained by the following circuit. 

Statement II: In the following circuit, for output to be 1, inputs ABC are 101.

• A

  Both statements I and II are correct.

• B

  Statement I is correct but statement II is incorrect

• C

  Statement I is incorrect but statement II is correct

• D

  Both statements I and II are incorrect.