In the excerpt below, which is the topic entence?
The Night Court [used to be] a center of general interest. During the first few
months after it was established two or three years ago, it was one of the
great sights of a great city. For the newspapers, it was a rich source of
human-interest stories. It replaced Chinatown in its appeal to visitors from
out of town. It stirred even the languid pulses of the native inhabitant with its
offerings of something new in the way of life. The sociologists, sincere and
amateur, crowded the benches and took notes.
Simeon Strunsky, "Nocturne, Modern Essays, ed. Christopher Morley (1921;
Bartleby.com: Great Books Online, 2000),
http://www.bartleby.com/237/24.html (accessed July 22, 2008).
OA. For the newspapers, it was a rich source of human-interest
stories.
OB. During the first few months after it was established two or three
years ago, it was one of the great sights of a great city.
OC. The Night Court [used to be] a center of general interest.
tirred ouon the languid pulses of the native inhabitant with its offering