MCQ

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Two statements are given$-$ one labelled Assertion $(A)$ and the other labelled Reason $(R).$ Select the correct answer to these questions from the codes $\text{(a), (b), (c)}$ and $(d)$ as given below:
Assertion $(A):\ Au$ and $Ag$ are extracted by leaching their ores with a dil. solution of $\text{NaCN}.$
Reason $(R):\ $ Impurities associated with these ores dissolve in $\text{NaCN}.$

• A
  Both Assertion $(A)$ and Reason $(R)$ are correct statements, and Reason $(R)$ is the correct explanation of the Assertion $(A).$
• B
  Both Assertion $(A)$ and Reason $(R)$ are correct statements, but Reason $(R)$ is not the correct explanation of the Assertion $(A).$
• ✓
  Assertion $(A)$ is correct, but Reason $(R)$ is incorrect statement.
• D
  Assertion $(A)$ is incorrect, but Reason $(R)$ is correct statement.