The current stock price of Verizon is $64 and the stock does not pay dividends over the next three months. The risk-free rate is 5% a year. Consider a call option on this stock with a strike price of $55 and a maturity of 0.2 years from now. Using the Black-Scholes model, we have N(d1)=0.968 and N(d2)=0.961. The value of the call under the model is __________.

$0.173

$6.61

$9.62

$60.57