[单选题]
A stretched string is5 cm:lb;ia r72ouqs6cmh )-gn oi97y*dfwme72 ; iifm.su bbk0bserved to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a *dw. f 9ubsi7k0i fb2em7; imystanding wave with five equal segments?
A. $600 \; Hz$
B. $360 \; Hz$
C. $240 \; Hz$
D. $120 \; Hz$