Please write in C++ and briefly explain.

Question 3 Write a function CheckWord to check if a word is spelled correctly. It should have the following parameters in the order provided: a string word an array of strings correctWords Size of the array correctWords . a 2D array of strings misspelledWordsDI2) the number of rows in the misspelledWords array. ? Your function should do the following with word: 1. Convert word to lowercase. 2. Check if the word is correctly spelled by searching for it in correctWords. If it is found, the function should return the word itself. 3. If the word is not found in correctWords, check if it is a misspelling we know of by searching for it in misspelledWords. If it is found, return the correct spelling. 4. If the word is not found in either array, return the string "unknown". The return value should always be lowercase