$A$ salt with a few drops of conc. $HCl$ gives an apple green colour in a flame test. The group precipitate of the salt is dissolved in acetic acid and treated with $K_{2}CrO_{4}$ to give a yellow precipitate. When the sodium carbonate extract of the salt solution is heated with conc. $HNO_{3}$ and ammonium molybdate, it results in a canary yellow precipitate. The cation and anion present in the salt are respectively,

• A
  $Ca^{2+}$ and $SO_{4}^{2-}$
• B
  $Ba^{2+}$ and $PO_{4}^{3-}$
• C
  $Mn^{2+}$ and $PO_{4}^{3-}$
• D
  $Ba^{2+}$ and $SO_{4}^{2-}$