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4.a) Declare an double array with 7 elements size and assign the values: 2, 4, 6, 8. b) Display the second and fourth element from an array. 5) Create a method named sum to return the summation of two numbers. 6) identify from the following: public static void Qw4() { System.out.println("CS"); System.out.println("hello "); } i) Method name : ii) Return type : iii) argument:- iv) Point to the method head with a narrow. V) Point to the method body with (l) square parentheses