match the items. the task is to match the lettered items with the correct numbered items. appearing below is a list of lettered items. following that is a list of numbered items. each numbered item is followed by a drop-down. select the letter in the drop down that best matches the numbered item with the lettered alternatives. a. we do not have a clear dependent variable. we have a feature matrix of x variables and no y variable. b. fall into the classification setting. c. we have clearly labeled dependent and independent variables. d. fall into the regression setting.