Implement a DNA Pair Generator

In the double helix of the DNA, the bases are always paired together: if on one strand there is an <em>A</em> base, on the other strand directly in front there is a <em>T</em> base, the other pair is <em>C</em> and <em>G</em>. In this lab, you will write a function to match the missing base pairs for the provided DNA strand. For each character in the provided string, find the base pair character. For example, for the input `ATCG`, return `[["A", "T"], ["T", "A"], ["C", "G"], ["G", "C"]]` The <em>A</em> base gets paired with a <em>T</em> base, the <em>T</em> base is paired with a <em>A</em> base, the <em>C</em> is paired with the <em>G</em> base, and finally the <em>G</em> base is paired with a <em>C</em> base. **Objective**: Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. You should have a `pairElement` function that takes a string of any length as an argument. 1. The `pairElement` function should return a 2d array, where each inner array has two strings inside, the first string is one base from the input, and the second string the paired base. 1. When given `A`, the function should pair it with `T`. 1. When given `T`, the function should pair it with `A`. 1. When given `C`, the function should pair it with `G`. 1. When given `G`, the function should pair it with `C`.