[单选题]
If a guitar string has a fundamental frequency )d4q6:i* qai. zb4p;tkg bx,etaeif * of 500 Hzaa/ 1(b+l/y kq iddhq+, which one of the following frequen1d+b /yqd(q ahi k/a+lcies can set the string into resonant vibration?
A. $250 \; Hz$
B. $750 \; Hz$
C. $1500 \; Hz$
D. $1750 \; Hz$
