For a reaction `(1)/(2)A rarr 2B`, rate of disappearance of `'A'` is related to the rate of apperance of `'B'` by the expression:

Options

A. `-(d[A])/(dt)=1/2(d[B])/(dt)`
B. `-(d[A])/(dt)=1/4(d[B])/(dt)`
C. `-(d[A])/(dt)=(d[B])/(dt)`
D. `-(d[A])/(dt)=4(d[B])/(dt)`

Answer

B