(I)
The rate of `o-`nitration of the above compounds, (I) toluene, (II) 2-D-toluene and (III) 2, `6-D_(2)-`toluene is in the following order
A. `I gt II gt III`
B. `II gt I gt III`
C. `III gt I gt II`
D. The rate is the same for all the three compounds