Consider the following reaction for `2NO_2(g) + F_2(g) rarr 2NO_2F(g)`. The expression for the rate of reaction in terms of the rate of change of Partial pressures of reactant and product is/are

Options

A. `rate= -1//2 [dp(NO_2)//dt]`
B. `rate= 1//2 [dp(NO_2)//dt]`
C. `rate= -1//2 [dp(NO_2F)//dt]`
D. `rate= 1//2 [dp(NO_2F)//dt]`