Rollers company is incorporated on January 1, 2018. Company is authorized to issue 160,000 shares of $6 par value. Following transactions related to stockholder's equity is given below: Shares issued Shares issued Net income Dividend paid Treasury stock purchased 16,000 @ $8 per share 32,000 a $9 per share $160,000 $80.000 3,500 shares $11 per share The balance of stockholder's equity at end of year 2018 is: a. S416,000 6. S457,500 C. S576,000 d. S489,500