Which one of the following statements is correct?

A) A cash dividend has no effect on the market value per share.

B) A stock repurchase increases the market value per share.

C) Stock repurchases are more tax advantageous than are cash dividends.

D) A stock repurchase increases the book value of shareholders' equity.

Answer is C, need an explanation for B and D, I think stock repurchase will increase the stock price.