A 0588-M String Is Tightly Clamped at Both Ends $326 \mathrm {~Hz}$

Multiple Choice

A 0.588-m string is tightly clamped at both ends. If the lowest standing wave frequency of the string is $326 \mathrm {~Hz}$ how fast do waves travel on this string?

A) 383 m/s
B) 475 m/s
C) 582 m/s
D) 724 m/s