What Group,besides College and University Students,makes Up a Large Percentage

What group,besides college and university students,makes up a large percentage of the tourists who visit South Padre Island each year?

A) Corporate leaders visiting the resorts on the island.
B) Cruise ship passengers visiting the local markets.
C) Mexicans visiting during the week before Easter.
D) "Snow Birds" or older,wealthy people seeking warmer climes during the North American winter.