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ick the code that will add a new property z to the first array element. let points = [ { x: 10, y: 20 }, { x: 15, y: 21 }, { x: 20, y: 22 }, { x: 25, y: 23 }, ]; Select one of the following:  points[0].z = 30; points{1}['z'] = 30; points.z = 30; points[1].z = 30;

ick the code that will add a new property z to the first array element. let points = [ { x: 10, y: 20 }, { x: 15, y: 21 }, { x: 20, y: 22 }, { x: 25, y: 23 }, ]; Select one of the following:  points[0].z = 30; points{1}['z'] = 30; points.z = 30; points[1].z = 30;

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Pick the code that will add a new property z to the first array element.

let points = [
{ x: 10, y: 20 },
{ x: 15, y: 21 },
{ x: 20, y: 22 },
{ x: 25, y: 23 },
];
Select one of the following: 
points[0].z = 30;
points{1}['z'] = 30;
points.z = 30;
points[1].z = 30;
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