What is the relative rate of reaction for the given reaction.2A + 9B

1.	What is the relative rate of reaction for the given reaction.2A + 9B → 7C + 4D
A.	–rA = -9rB=7rC=–4rD
B.	–rA =-rB/9=rC/7=rD/4
C.	–rA =-rB/9=7rC=4rD
D.	–rA = 9rB=-7rC=–4rD
Answer» C. –rA =-rB/9=7rC=4rD

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