There are more opera houses than there were two decades ago, and charitable contributions are on the rise. Average audiences for opera, however, have been declining for the past twenty years.
Which of the following. if true, best explains the discrepancy above?
A. In the past twenty years musical theater audiences have grown.
B. A change in the tax code has conferred certain advantages on charitable giving.
C. Constructions codes have been revised on a national level to promote the construction of cultural facilities.
D. there has been an emphasis on unamplified sound in opera.
E. The number of new works has declined in the past three decades.