Check one checkbox and disable 2 other checkboxes

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#1

When I check one checkbox I want to disable two other checkboxes.
But when I uncheck this first checkbox two other should be enabled again. I don`t know how to do that.

For now when I uncheck the first checkbox the other two remain disabled, I want it enabled.
Here is my code:

<div id="app"><template>
    <input type="checkbox" name = "qwe" @change="changeStatus(c)"   :disabled="selectedContent.length > 0 && selectedContent[0] != c">
    <input type="checkbox" name = "asd" @change="changeStatus(b)"  :disabled="selectedContent.length > 0 && selectedContent[0] != b">
    <input type="checkbox" name = "zxc" @change="changeStatus(d)" :disabled="selectedContent.length > 0 && selectedContent[0] != d">
</template>
</div>


    new Vue({

      el: "#app",

      data: {

          selectedContent: [],

          c: '1',

          b: '2',

          d: '3',

      },

      methods: {

       changeStatus: function(data) {

            if (this.selectedContent.length === 0) {

            this.selectedContent.push(data);

          }

        }

      }

    })

Please help me.

#2 
changeStatus: function(data) {
    if (this.selectedContent.length == 0) {
        this.selectedContent.push(data)
    } else {
        this.selectedContent = []
    }
}
#3

Hello @Olena
You need give one more condition in changeStatus function like this

changeStatus: function (data) {
if (this.selectedContent.length != 0) {
this.selectedContent.pop();
} else {
this.selectedContent.push(data);
}
},
},
also you can check demo : Check one checkbox and disable 2 other checkboxes
I hope this works for you