Which of the Following Rentals Would Be Considered to Be

Which of the following rentals would be considered to be used "primarily" as a rental:

A) A condo in Aspen,Colorado is rented for 90 days.The owners use it 10 days during the summer and it is vacant for the rest of the year.
B) The taxpayer rents out his personal residence for the week that he is on vacation.
C) The taxpayer owns a beach front property which he lives in for most of the year.During the summer months,the taxpayer takes an extended vacation and travels throughout the United States.The taxpayer is able to rent out his residence for 60 days during the summer.
D) A person's Florida vacation home is rented out for 90 days and used for his personal use for 30 days.