2A(g) +4B(g) -> 2AB2 (g)
The process above was analyzed and it was determined that the rate of appearance of AB2(g) was 2.5*10^-2 M?min at one instant in time. What was the rate of disappearance of B(g) at that same time?
A: 2.5*10^-2 M/min
B: 5*10^-2 M/min
C: 1.3*10^-2 M/min
D. 1*10^-1M/min
E: 7.5*10^-2 M/min