This man is not kind and lovely If the above is true, which of the following must be true A if this person is kind, then he must not be lovely. B if this person is not kind, then he must be lovely C is kind, but not lovely. D is lovely, but not kind. E is neither kind nor lovely The correct answer is a What I think is, the above proposition = this person is either kind or lovely So choose ab. but why is the answer a? What's wrong with B? I hope you can give us a more detailed reasoning process

This man is not kind and lovely If the above is true, which of the following must be true A if this person is kind, then he must not be lovely. B if this person is not kind, then he must be lovely C is kind, but not lovely. D is lovely, but not kind. E is neither kind nor lovely The correct answer is a What I think is, the above proposition = this person is either kind or lovely So choose ab. but why is the answer a? What's wrong with B? I hope you can give us a more detailed reasoning process

You think wrong: the above proposition ≠ the person is either kind or lovely; but the above proposition = the person is either "not kind" or "not lovely"; analysis: the original proposition = the person is [not] [kind and lovely]; first of all, [kind and lovely] means both "kind" and "lovely"