How can I determine which checkbox was selected in your state?

I'm using react-native-elements checkbox, i have 2 checkboxes and i want to select one of them only and i managed to do that, but I'm trying to console.log the checked box only but it's not working because they have two different states, so how can i determine which box was checked in my app using the state? here is the code:

Initial state:

state: {
  single: false,
  married: false
}

Checkboxes:

 <CheckBox title="Single"
              checked={this.state.single}
              onPress={() => this.setState({ single: !this.state.single, 
              married: false})}/>

 <CheckBox title="Married"
              checked={this.state.married}
              onPress={() => this.setState({ married: !this.state.married, 
              single: false})}/>