MCQ
In the following reaction $A$ is


- A

- B

- ✓

- D








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$A(g)\,\xrightarrow{{{K_1}\, = \,2\, \times \,{{10}^{ - 3}}\,\,{S^{ - 1}}}}2B\,(g)$
$A(g)\,\xrightarrow{{{K_2}\, = \,1\, \times \,{{10}^{ - 3}}\,\,{S^{ - 1}}}}C\,(g)$