Most successful entrepreneurs work at least 18 hours a day, and no one who works at least 18 hours a day has time for leisure activities. But all happy entrepreneurs have time for leisure activities.

Question: If the statements above are true, each of the following could be true EXCEPT:
Options:
A. Anyone who has no time for leisure activities works at least 18 hours a day., B. Some entrepreneurs who work at least 18 hours a day are successful., C. Some happy entrepreneurs are successful., D. Some entrepreneurs who work at least 18 hours a day are happy., E. Some successful entrepreneurs work less than 18 hours a day.
Answer: "D"