If the U.S. builds a wall on the Mexico border, what type of concrete should be used? (poll 9370921)

If the U.S. builds a wall on the Mexico border, what type of concrete should be used?

Precast panels

Plain gray cast-in-place

Colored and textured cast in place

Reinforced concrete masonry

Brick

Other:

See this poll on: https://poll.fm/9370921/embed