A call center receives an average of three phone calls per hour. The probability that they will receive 8 calls in an 5-hour day is closest to:
　　A.        1.94%
　　B.        4.37%
　　C.        3.66%
　　D.        2.40%
　　After incurring huge trading losses, Leeson made an effort to recover those losses by abandoning his original hedged position in a long-short futures arbitrage strategy and initiated a long-long futures position on two trading exchanges. As well, one of his other trading strategies was selling straddles on the Nikkei 225 (which would have been profitable had the underlying index remained relatively unchanged).