be opened by Excel. 30 points j) Does not provides an event handler to handle the Compute button click and another handler will be needed to produce the file described above when the window is closed. The latter handler is an object of an inner class that extends the WindowAdapter class. 0 points a) All methods are class( static) methods. a) All methods are not class( static) methods. b) Contains three public methods. b) Does not contain three public methods. c) Contains computeIterative method that accepts a value of n and returns the corresponding element in the sequence using iteration. c) Does not contain the computeIterative method that accepts a value of n and returns the corresponding element in the sequence using iteration. d) Contains method computeRecursive that accepts a value of n and returns the corresponding element in the sequence using recursion. d) Does not contain the computeRecursive method that accepts a value of n and returns the corresponding element in the sequence using recursion. e) The computeRecurvise method will initialize the efficiency counter before calling the private recursive method that will actually perform the recursive computation. e) The computeRecurvise method does not initialize the efficiency counter before calling the private recursive method that will actually perform the recursive computation. f) The getEfficiency method returns the