Musical Instruments Are Classed into Groups: Voices, Strings, Woodwinds, Brass

Multiple Choice

Musical instruments are classed into groups: voices, strings, woodwinds, brass and percussion. Although they can be classified as wind, string, or percussion instruments, keyboard instruments are often considered separately. Operated by air under pressure, the human voice is technically a wind instrument. In recent times the computer and other electronic media have emerged as new means of producing music. Robert Hickok, Exploring Music

A) Argument, conclusion: Although they can be classified ... considered separately.
B) Argument, conclusion: Musical instruments ... brass and percussion.
C) Nonargument.
D) Argument, conclusion: In recent times ... new means of producing music.
E) Argument, conclusion: Operated by air under pressure ... wind instrument.