It can be inferred from the passage that by "a piano exactly contemporary" with the composition of Beethoven's first piano concerto, the author means the kind of piano that was A. Designed to be inaudible to the audience when used by conductors of orchestras. B. Incapable of playing the high F-natural that is in the score of Beethoven's original version of the concerto. C. Unavailable to Mozart and Haydn. D. Incapable of playing the high F-sharp that the melody of the concerto calls for. E. Influential in Beethoven's decision to revise his early compositions.