Wrong comportement when checking checkbox / disable others

For context, i work on a feature composed of a list of access rights wich exclude each others. Former database :

|   A   |   B   |
| True  | False |
| False | True  |

Before , if A was True B was false. And the script was disabling the checkbox relatives to the other condition. (ie : check a B relevant checkbox --> A relevant checkbox are disabled)

Now there is a new access right in database wich is allowed for both A and B :

|   A   |   B   |
| True  | False |
| False | True  |
| True  | True  |




 $(function() {

    var updateExpert = function() {
        var A = $('.fonctionnalite-check[data-A="true"]:checked').size() > 0;
        var B= $('.fonctionnalite-check[data-B="true"]:checked').size() > 0;


        $('.fonctionnalite-check[data-A="true"][data-B="true"]').each(function() {
            $(this).prop('disabled', true);
            $('#'.concat($(this).attr('data-categorie'))).prop('disabled',false);

        });

        $('.fonctionnalite-check[data-A="true"][data-B="false"]').each(function() {
            console.log("TF");
               $(this).prop('disabled', A && !B);
               $('#'.concat($(this).attr('data-categorie'))).prop('disabled', B);

        });

        $('.fonctionnalite-check[data-B="true"][data-A="false"]').each(function() {
            console.log("FT");
                $(this).prop('disabled', A && !B);
                $('#'.concat($(this).attr('data-categorie'))).prop('disabled', A);

         });


    };

That's for the context, now the problem :

When I Check a A relevant checkbox -> B relevant checkbox are disabled , and the "TRUE - TRUE" case , is ignored ( not disdabled ) -> OK

---

When I Check a B relevant checkbox -> A relevant checkbox are disabled , and the "TRUE - TRUE" case , is ignored ( not disdabled ) -> OK

---

When I Check a A && B relevant checkbox -> all others checkbox are disabled -> KO

---

My opinion :

• Failing selector
• bad boolean logic , maybe i'm missing something

Thanks by advance