If there are no dividends on a stock, which of the following statements is correct?
a. An American call will sell for more than a European call
b. A European call will sell for more than an American call
c. An American call will be immediately exercised
d. An American call and an American put will sell for the same price
e. none of the above

The following quotes were observed for options on a given stock on November 1 of a given year. These are American calls except where indicated. Use the information to answer questions 7 through 20.

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The stock price was 113.25. The risk-free rates were 7.30 percent (November), 7.50 percent (December) and 7.62 percent (January). The times to expiration were 0.0384 (November), 0.1342 (December), and 0.211 (January). Assume no dividends unless indicated.