[单选题]
What is the length of the shortest pipb3be;dke:/x oe closed on one rx- rgt cp 0 3)q2e2ep3/:edkm1tso dvend that will have a fundamental frequenc rmo-2rq 1x:k3 2tde/ pvpdsg3 0tece)y of 60 Hz on a day when the velocity of sound is 340 m/s?
A. $1.24 \; m$
B. $1.42 \; m$
C. $2.14 \; m$
D. $4.12 \; m$
