Lauren owns a condominium. In each of the following alternative situations, determine whether the condominium should be treated as a residence or nonresidence for tax purposes?
a. Lauren lives in the condo for 19 days and rents it out for 22 days.
b. Lauren lives in the condo for 8 days and rents it out for 9 days
c. Lauren lives in the condo for 80 days and rents it out for 120 days
d. Lauren lives in the condo for 30 days and rents it out for 320 days.