Statement $I$: Lac operator is present only in $lac$-operon and it interacts specifically with $lac$-repressor only.
Statement $II$: Each operon does not have a specific operator and a specific repressor.

• A
  Statement $I$ and $II$ both are correct
• B
  Statement $I$ is correct but Statement $II$ is incorrect
• C
  Statement $I$ is incorrect but Statement $II$ is correct
• D
  Statement $I$ and $II$ both are incorrect