An investor has exchange-traded put options to sell 100 shares for $20. There is 25% stock dividend. Which of the following is the position of the investor after the stock dividend?
选项：

A: Put options to sell 100 shares for $20
B: Put options to sell 75 shares for $25
C: Put options to sell 125 shares for $15
D: Put options to sell 125 shares for $16