In which of the following ways can we create strings in JavaScript?A'A string'B"A string"C`A string`DAll of the above

What is the best description of the problem in the code below?var str = "Hello World";str[0] = "F";AOnce a string is created it can't be changed in place, since strings are mutable in JavaScript.BOnce a string is created it can't be changed in place, since strings are immutable in JavaScript.CChanging characters of a string can only be done using the setCharAt() method.

Which method is used to merge two strings in JavaScript?

Which of these is the correct syntax for string concatenation in JavaScript?A. str1 + str2None of these options.Both A and B.B. str1.concat(str2)

How can you initialize an array of two characters to 'a' and 'b'?  Please select all that apply.Group of answer choiceschar[] charArray = new char[2]; charArray = {'a', 'b'};char[2] charArray = {'a', 'b'};char[] charArray = {'a', 'b'};char[] charArray = new char[2]; charArray[0] = 'a'; charArray[1] = 'b';

How can you create an object in JavaScript?A. var obj = {};B. All the optionsC. var obj = new Object();D. var obj = Object();