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Two elements, A and B,combine to form a ...

Two elements, A and B,combine to form a compound in which 'a' g of A combines with `'b_1'` and `'b_2'` g of B respectively. According to law of multiple proportion_____.

A

`b_1 = b_2`

B

`b_1 and b_2`bear a simple whole number ratio

C

a is always equal to `b_1`

D

no relation exists between `b_1 and b_2`

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