Suppose ABCD's stock price is currently $50. In the next six months, it will either fall to $40 or rise 8 to $60. What is the current value of a six-month call option with an exercise price of $50? The six- month risk-free interest rate is 2% (periodic rate).
A. $5.39
B. $15.00
C. $8.25
D. $8.09