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For 2A to B, [A] changed from 0.08M to ...

For `2A to B`, [A] changed from 0.08M to 0.04M in 100 seconds. Now `(Delta [B])/(Delta t)` will be

A

`2 xx 10^(-4) Ms^(-1)`

B

`4 xx 10^(-4) Ms^(-1)`

C

`8 xx 10^(-4) Ms^(-1)`

D

`1.2 xx 10 Ms^(-1)`

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A
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