What is the best summary of the paragraph?
A.
Roman aquaducts were constructed to move water from the mountains to the cities of the Empire that could be up to 60 miles away. Once in the cities, the water was used to clean the streets and prevent the spread of disease.
B.
Roman aquaducts could be 60 miles long and moved cold spring water from the mountains into the cities. Without this water, the streets of the cities would have been filthy with overflowing sewers, and diseases would have spread.
C.
Roman aquaducts are a marvel of modern engineering and architecture. They could be up to 60 miles long and were made up of graceful arches. They were used to carry water through the Roman Empire.
D.
Roman aquaducts are a marvel of modern engineering and architecture. The aquaducts moved water from the mountains to cities, which kept the Roman cities clean by removing refuse and preventing diseases from spreading.