The Distinction Between American and European Options Is That

The distinction between American and European options is that:

A) American options trade in the United States,while European options trade in Europe
B) American options can be exercised at any time until expiration,while European options can only be exercised at the time of expiration
C) American options have a capped payoff,while European options traders can have unlimited profits or losses
D) American options end in physical delivery of the underlying asset,while European options end in cash settlement
E) None of these answers are correct.