A.Rome was located on seven hills with 500 churches, big and small, and I visited nearly all of them

B.Rome was built on seven hills, and it owed 500 big and small churches. I visited nearly every one

C.Rome is a city which was built on seven hills and owed 500 big and small churches, and I have visited nearly all of them

D.Rome was located on seven hills with 500 big or small churches. I have visited nearly every one