A. 2/3

B. 4/3

C. 8/3

D. 16/3

If a is the area bounded by y=x^{2},x-axis,x=0,x=2; b is the area bounded by y=x^{2}+2,x-axis,x=1,x=2 and c is the area bounded by y=x^{3},x-axis,x=1,x=4 then the ascending order of a,b,c is