Given below are two statements :
Statement $I$ : Aqueous solution of ammonium carbonate is basic.
Statement $II$ : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on $K_a$ and $K_b$ value of acid and the base forming it.
In the light of the above statements,choose the most appropriate answer from the options given below :

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