GMAT prep DS question

The question is what are individual digits of a 3 digit number. Every digit is different.

Statement I - Sum of the digits is 10
7 2 1
5 4 1
5 3 2

Not Sufficient.

Statement II - x<y<z
967
248.....etc

Not Sufficient.

Combining two statements.

1 2 7
1 4 5
2 3 5

Not Sufficient.

Hence E.

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