The object created in this statement ( Scanner input= new Scanner (System.in);) is named: new O input Scanner System Choose the correct statement among the above char s =firstName.charAt(3), char s=firstName.charAt("3"). String s =firstName.charAt("3"); String s =firstName.charAt(3); Given the following variable (int x; int y; float z) choose the correct expression to get z (result of dividing x by y) as a floating point number: Z=x/(float)y; O z=x/(int)y, (float)z=x/y; z=float(x/y); The appropriate method used to read the following name typed by the user "Ahmad Mahmoud" is. next() nextByte() nextLong() O nextLine() Give the correct statement among the above: System.out.println("Hello") System out println("thank you"), o System.out.println("how are you"?); system.out.println()