[单选题]
15.04: A standing wave on a stringh e3qq. 4u:lgo is produced. Which one of the followinglt te5w8 k9*j6d.tnmo choices best describes the location on the string at which maximum constructive interft 8*ot9 k5.new6t mdjlerence occurs?
A. node
B. antinode
C. harmonic
D. overtone
E. amplitude
