The disodium salt of ethylene diamine tetraacetic acid can be used to estimate the following ion$(s)$ in an aqueous solution:

  • A
    $Mg^{2+}$ ion
  • B
    $Ca^{2+}$ ion
  • C
    $Na^{+}$ ion
  • D
    both $Mg^{2+}$ and $Ca^{2+}$

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