Cell Tower stock has a current market price of $38.00 a share. The one-year call on Cell Tower stock with a strike price of $38.50 is priced at $5.00 while the one-year put with a strike price of $38.50 is priced at $4.00. What is the risk-free rate of return? 3.69 percent 5.17 percent 3.19 percent 4.05 percent O 4.67 percent