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For the following Assertion and Reason ,...

For the following Assertion and Reason , the correct option is
Assertion (A) : When Cu (II) and sulphide ions are mixed , they react together extremely quickly to give a solid .
Reason (R) : The equilibrium constant of `Cu^(2+) (aq) + S^(2-) (aq) hArr CuS (s)` is high because the solubility product is low .

A

Both (A) and (R) are false

B

(A) is false and (R) is true

C

Both (A) and (R ) are true and ( R ) is the explanation for (A).

D

Both (A) and (R ) are true and (R ) is not the explanation for (A).

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