An investor has exchange-traded call options to buy 100 shares for $20 a share. There is a 4 for 1 stock split. Which of the following is the position of the investor after the stock split?

Group of answer choices

A. Call options to buy 400 shares for $5 a share

B. Call options to buy 400 shares for $20 a share

C. Call options to buy 25 shares for $80 a share

D. Call options to buy 25 shares for $20 a share

E. Put options to sell 400 shares for $5 a share