Needs for flood barriers:

- Must stop floodwaters that are 24 inches high
- Must allow the doors to open and close
- Must be reusable year after year
- Must cost less than $4,000 total
- Must be set up in 60 minutes or less

Which of the following statements about sandbags are true? Select all that apply.

A. Sandbags can be set up in less than an hour, and they can be reused many times.
B. Sandbags cannot be used over and over again, but they cost less than $4,000.
C. Sandbags can stop floodwaters while still allowing the doors to open.