Classify the following items as (1) operating, (2) investing, (3) financing, or (4) significant noncash investing and financing activities, using the direct method. (a) Cash payments to employees. Financing activityInvesting activitySignificant noncash investing and financing activitiesOperating activity (b) Redemption of bonds payable. Investing activityFinancing activitySignificant noncash investing and financing activitiesOperating activity (c) Sale of building at book value. Significant noncash investing and financing activitiesOperating activityFinancing activityInvesting activity (d) Cash payments to suppliers. Operating activityFinancing activityInvesting activitySignificant noncash investing and financing activities (e) Exchange of equipment for furniture. Financing activityOperating activityInvesting activitySignificant noncash investing and financing activities (f) Issuance of preferred stock. Significant noncash investing and financing activitiesOperating activityFinancing activityInvesting activity (g) Cash received from customers. Financing activityOperating activityInvesting activitySignificant noncash investing and financing activities (h) Purchase of treasury stock. Investing activityOperating activitySignificant noncash investing and financing activitiesFinancing activity (i) Issuance of bonds for land. Financing activityInvesting activitySignificant noncash investing and financing activitiesOperating activity (j) Payment of dividends. Significant noncash investing and financing activitiesInvesting activityOperating activityFinancing activity (k) Purchase of equipment. Operating activityFinancing activityInvesting activitySignificant noncash investing and financing activities (l) Cash payments for operating expenses. Significant noncash investing and financing activitiesOperating activityFinancing activityInvesting activity