Which of the following can be inferred about the "university lecture hall" mentioned in the passage? A. It was not originally designed to be used for lecture. B. It was more suitable for listening to music than for listening to the spoken word. C. Its walls had surfaces made of material with very poor sound-absorbing properties. D. Its poor acoustics resulted from its being designed to accommodate a large audience. E. It was constructed at a time when sound-absorbing building materials were not readily available.