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Assertion (A): Crushed limestone is stacked in long layers and reclaimed across the stockpile rather than from one end.
Reason (R): Reclaiming across the layers averages the chemistry of material laid down at different times.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Both are true and the reason gives the purpose of the arrangement: a cut taken across many layers contains a little of everything stacked, so short-term variation in the quarry is smoothed before the material ever reaches the mill.

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