KM Ltd. has 50,000 no par value common shares authorized, issued, and outstanding. All 50,000 shares were issued at $4 per share. Retained earnings are $ 60,000. If 5,000 common shares were reacquired at $3 cash and cancelled, then Select one: O a. shareholders' equity would decrease $75,000. O b. contributed surplus would increase $ 5,000. contributed surplus would decrease $5,000. O c. O d. retained earnings would decrease $15,000.