To what extent must a given solution of concentration of $40 \, mg$ silver nitrate per $mL$ be diluted to yield a solution of concentration of $16 \, mg$ $AgNO_3$ per $mL$?

  • A
    Each $mL$ must be diluted to $2.5 \, mL$
  • B
    To each $mL$ of solution $2.5 \, mL$ of water should be added
  • C
    To $2.5 \, mL$ of solution $2 \, mL$ of water should be added
  • D
    To $1.5 \, mL$ of solution $1.5 \, mL$ of water should be added

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