.The backend editor for code that initializes the tools in form is called a) form1.cs b) form1. Designer.cs c) program.cs d) bino ? What is the result of the following code static int MyMethod (double a, int b) { return a+b; } static void Main(string[] args) { int sum = MyMethod (6,2); Console.WriteLine (sum); } a) 8 b) sum = 8 c) MyMethod must return double d) Error * ? Which of the following is the correct output of the following C# code int[][] a = new int[2][]; a[0] = new int[4] { 6, 1, 4, 3 }; a[1] = new int[3] { 9, 2, 7 }; Console.WriteLine(a[1]. GetUpperBound()); a) 3 b) 4 O c) 7 d) 2 O * ? What is the output of the following code class Program { static void Main(string[] args) { Console.WriteLine("Enter your age:"); int age = Console.ReadLine(); } } a) Error 0 b) "Enter your age:" c) Enter your age: 11 a) Enter your age: O Use the following form to add item from the textBox1 to the ComboBox1 using ?the Button1(Add Item) bellow to write the required code Form1 textBox1 Add Item Combo Box Ajloun Irbid Jarash Tafilah Amman string x = textBox1 .Text; comboBox1.Add (x); strine x = textBox1 .Text; comboBox1.Items (x); b) string x = textBox1 .Text; comboBox1.Items.Add(x); d) all are correct O. * ?One of the following controls in C Sharp can be selected more than time a) radio Bottom b) check Box c) label d) none of them