The equilibrium constant of the reactions
`SO_(2)(g)+1/2 O_(2)(g)hArrSO_(3)(g)`
and `2SO_(2)(g)+O_(2)hArr2SO_(3)(g)`
are `K_(1)` and `K_(2)` respectively. The relationship between `K_(1)` and `K_(2)` is
A. `K_(1)=K_(2)`
B. `K_(2)=K_(1)`
C. `K_(1)=sqrt(K_(2))`
D. `K_(2)=sqrt(K_(1))`