This Question: 1 pt 3 of 18 (6 complete) 4 This Test: 18 pts possible What actions can an S corporation shareholder take before year end to increase the amount of the S corporation's losses he or she can deduct in the year they are incurred? OA. Only increase debt basis. The shareholder can make additional loans to the corporation by year-end OB. Increase stock basis or decrease debt basis. The shareholder can make additional capital contributions to the corporation up until the date the S corporation tax return is fled, excluding extensions C. Increase stock or debt basis. The shareholder can make additional capital contributions or make additional loans to the corporation by year-end OD. None of the above