In the early twentieth century, Joseph Kekuku and other Hawaiian ________ in the mainland United States to the bright and lifting sound of the kika kila, or Hawaiian steel guitar. The instrument soon became a fixture in American blues and country music.
Which choice completes the text so that it conforms to the conventions of Standard English?
A:
musicians introduced audiences
B:
musicians' introduced audiences'
C:
musician's introduced audience's
D:
musicians' introduced audiences