In my opinion "I will not" sounds more obedient. 'OK' is ok. I am wondering whether 'Alright' fits here.
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Mister MicawberNo, not at all. I suppose that this is what you mean:Can't there be Yes instead?
A: Don't do A.
B1: ------- We do not answer in any way like that. A native response would be "But I have to do A / I was told to do A", etc.
B2: But I'm not doing A. / OK, I won't do A.