Statement I:  An aqueous solution of ammonium acetate can act as a buffer.
Statement II:  Acetic acid is a weak acid and ${\mathrm{NH}}_4\mathrm{OH}$ is a strong base

• A

  Both statements I and II are correct.

• B

  Statement I is correct and statement II is incorrect.

• C

  Statement I is incorrect and statement II is correct.

• D

  Both statements I and II are incorrect.