What is the correct way to write sentences 23 and 24?
(23) Cat cafés are relatively new to America. (24) But have been popular in other areas of the world for some time.

Cat cafés are relatively new to America but have been popular. In other areas of the world for some time.

Cat cafés are relatively new to America and have been popular in other areas. Of the world for some time.

Cat cafés are relatively new to America, they have been popular in other areas of the world for some time.

Cat cafés are relatively new to America, but they have been popular in other areas of the world for some time.