Which of the Following Statements Is Correct

Which of the following statements is correct?

A) Stock dividends are distributions made by a corporation of another corporation's stock.
B) In computing basis for new stock received as a result of a nontaxable dividend, it is immaterial whether the stock received is identical or not to the old stock.
C) If a stock dividend is taxable, the basis of the old stock does not change.
D) If you receive nontaxable stock rights and allow them to expire you have a tax deductible loss.