Based in your question where as ask on which of the following is the equivalent to x^2/xy^2 when y=0 and z=0 and based on my calculation and understanding the possible outcome of your equation will just result to zero but the answer is i think all of them
They are actually equivalent because 3 is a factor of 30 because 3x10
And 10 is a factor of 100 so 10x10
The points in order from top to bottom are :
F
E
C
H
I
0000000000000000000000000000000