another method of substituting values (by hit and trial) and POE:

A. x = w, possible for x=1+2+3+4+5+6, and w=6+7+8

B. x > w, certainly possible, if we use big numbers for x

C. x/y is an integer (leave this one for time being)

D. w/z is an integer, possible, w=1+2+3 and z=3

E. x/z is an integer, possible, x=1+2+3+4+5+6, and z=3

Hence C

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