Read the Jenkinsfile: parallel browser stages

Read the Jenkinsfile.

Jenkinsfile

pipeline {
    agent none
    stages {
        stage('UI tests') {
            failFast false
            parallel {
                stage('Chrome') {
                    agent { label 'linux' }
                    steps {
                        sh 'mvn -B test -Dbrowser=chrome'
                    }
                    post {
                        always {
                            junit 'target/surefire-reports/*.xml'
                        }
                    }
                }
                stage('Firefox') {
                    agent { label 'linux' }
                    steps {
                        sh 'mvn -B test -Dbrowser=firefox'
                    }
                    post {
                        always {
                            junit 'target/surefire-reports/*.xml'
                        }
                    }
                }
            }
        }
    }
}

Which statements are true? Choose all that apply.