can you look out this one ? both a and b part

Dahlia Corporation has had five years of high profits. Due to this success, the market price of its 500,000 common shares tripled from $15 to $45 per share. During this period, the Common Shares account remained the same at $2 million. Retained Earnings increased from $1.5 million to $10 million. President Bill Zerter is considering either (a) a 10% stock dividend, or (b) a 2 -for-1 stock split. He asks you to show the before-and-after effects of each option on the Common Shares and Retained Earnings accounts and on the number of shares