Now I am missing something here...
You said above that 96 = 6*8*2(m = 682 - even) or 8*2*6 (m = 826 - even) or 8*4*3 (m = 843 - odd)
So how is 1 correct?
Thanks for the clarifiaction.
it appears that you don't understand how data sufficiency works.
basically, you take each numbered statement AS A GIVEN, and see WHETHER YOU CAN DEDUCE A UNIQUE ANSWER TO THE PROMPT QUESTION with that given statement taken as true.
if statement (1) is taken AS GIVEN, then the only possible units digit is 3. (see your own list of possibilities to verify this statement.)
therefore, statement (1) is SUFFICIENT to determine a unique answer to the problem.
this is how data sufficiency works.
i've noticed that you're listed as a "prospective student". if you attend our class, you will come away from session #1 with a thorough knowledge of the basics of this vexing question type.