Javascript String MCQ

var str = "Hello World!";
console.log(str.endsWith("World!"));

var str = "Hello World!";
console.log(str.includes("World"));

var str = "Hello World!";
console.log(str.repeat(3));

const str = 'Hello, world!';
console.log(str.charAt(0));

const str = 'Hello, world!';
console.log(str.charAt(str.length - 1));

const str = 'Hello, world!';
console.log(str.substring(0, 5));

const str = 'Hello, world!';
console.log(str.substring(7, 12));

const str = 'Hello, world!';
console.log(str.slice(0, 5));