Professors that won't admit they are wrong

My Community Property professor asked a question on the midterm that only 32% of the class answered correctly. Why? The question was retarded. It asked about a situation regarding a prenuptial agreement where the woman contracted away her rights to receive alimony or child support in the event of divorce. First of all nobody in their right mind would do this and you can't even disclaim your right to seek child support because by virtue kids need support no matter how dumb the prenup. Anyways the question asked what would be the woman's strongest argument if the case went to trial: (a) To try to just go for the child support because you cannot disclaim a child's right to support in a prenup; or (b) To try to get the child support and alimony. I wrote A because it's much more likely that the child support will be enforced then child support and alimony. The Professor said the best answer was (b) which is fucking absurd because getting both child support and alimony is much less likely to prevail. I asker her in class is "strongest" argument translated to "most outrageous" argument which she had no response for. For all the accountability bullshit that gets preached in law school when it comes down to it nobody is willing to admit they are wrong because they are too stubborn. Who pays the price? Students who actually care about knowing what the right answer is.