5 At the end of the accounting period, a company's retained earnings balance was $668,000. A sum of $80,000 was transferred to general reserves, dividends declared and ut of paid amounted to $115,000, and profit after tax totalled $48,000. What was the opening balance for retained earnings? Select one: O a. $815,000 O b. $911,000 O C. $751,000 O d. $521,000