[单选题]
A stretched string is observed to have four equal segment *tb*fo- f(nmts inlu (lr7d,cs yvk70l3e a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with fi3(e0 7lvy7usrd,kc llve equal segments?
A. $600 \; Hz$
B. $360 \; Hz$
C. $240 \; Hz$
D. $120 \; Hz$