一道 模考题

As the music of legendary composers Cole Porter and Sammy Kahn bear out, many of the best songs to emerge in the 1940’s were based not on topical themes on the day but on more introspective themes such as love and loss.

A.      As the music of legendary composers Cole Porter and Sammy Kahn bear out

B.      As the music of legendary composers Cole Porter and Sammy Kahn bears out

答案是B 解释是music单数所以用bears 这里的bear out 不是创作的意思吗？主语应该是2个人吧