Which statements summarize what is different about the original purposes of each structure? Select two options. A. The tower was built to be decorative; the dam was built for practical uses. B. The tower was built by a single engineer; the dam was built by many workers. C. The tower was built to serve a purpose; the dam was built for people to admire. D. The tower was built for business reasons; the dam was built for personal reasons. E. The tower was built to increase tourism; the dam was built to discourage tourism. F. The tower was built to be temporary; the dam was built to last for a very long time.