• Use Black-Scholes Option (European) Pricing Model.
• Suppose a stock is trading today for $28.00.
• Stock annual volatility is 35.00%, has a dividend yield of 0.00%.
• Suppose the annual risk-free rate is 3.50% and the option exercise price is $31.00.
• The option expires in 0.50 years (or 180 days).

How much is the value of this Call option? Enter your answer in the following format: 1.23 Hint 1: The answer is between 1.71 and 2.31; Hint 2: N(d1) =0.4142.