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Assertion: 12 parts by mass of carbon in...

Assertion: 12 parts by mass of carbon in CO and `CO_2` molecules combine with 16 and 32 parts by mass of oxygen.
Reason : A given compound always contains exactly the same proportion of elemetns by weight.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not correct explanation of assertion.

C

If assertion is true but reason is false.

D

If both assertion and reason are false.

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