I need help with these questions please. The language is C#.

Sa/What is the tndex of the ydent which coni Question3 highest variable 1, 2, 3, ? intll a 4, 5 : 3b)/write a statement to display the No. on a label 3 array element value 3c)// write a for loop to display each array element in a message box. for C private bool IsEven (int input Value Question 4 named 5a)// decalare a Boolean variable named resultVariable // complete a method IsEven, the Is Even method converts the user input and stores it in the arguments. If the user input is an number, the method returns true. ve5b)/initialize the above resultVariable 5e)/ convert and assign a user input through textBoxl to the argument variable input Value inputValue- if (inputValue % 2-0 ) 5d)//assign a new value to variable inputValue resultVan able= 5e // return the result