Following is the stockholders equity section of the 2021 balance sheet for Buggy Company: Buggy Company December 31, 2021 STOCKHOLDERS' EQUITY Common stock -- $.002 par value 6,000,000 shares authorized and 5,500,000 shares issued $11,000 Additional paid-in capital $3,300,000 Retained earnings $12,540,000 Treasury stock -- 1,500,000 shares at cost ($14,520,000) Total stockholders' equity $1,331,000 What is the number of shares that are outstanding as of December 31, 2021? Group of answer choices 6,000,000 5,500,000 4,500,000 4,000,000