If `A_(1)` is the area enclosed by the curve `xy=1,` x-axis and the ordinates `x=1,x=2,and A_(2)` is the area enclosed by the curve `xy=1,` x-axis and the ordinates `x=2, x=4,` then
A. `A_(1)=2A_(2)`
B. `A_(2)=2A_(1)`
C. `A_(2)=3A_(1)`
D. `A_(1)=A_(2)`