Statement $I$: The codon $\text{UAA}$ codes for lysine.
Statement $II$: Genetic code is usually ambiguous.
In the light of the above statements,choose the correct answer from the options given below.

• A
  Both statement $I$ and statement $II$ are true
• B
  Both statement $I$ and statement $II$ are false
• C
  Statement $I$ is correct but statement $II$ is false
• D
  Statement $I$ is incorrect but statement $II$ is true