6 - please help me

On January 1, 2020, Wassel Corp. had 300,000 shares of common stock outstanding. During 2020, it had the following transactions that affected the common stock account. Februaryl Issued 150,000 Shares May 31 Issued a 3-for-1 stock split September Acquired 510,000 1 share of treasury stock What is the weighted average number of shares outstanding as of December 31, 2020? O a. 1,142,500 Ob. 1,000,000 O c. 1,135,000 O d. 1,350,000