[单选题]
What is the length okbm) 6d qbl 8;kb7;iacf 1xy2djoy 9) rhe m-*zlf u :vol7pfb68the shortest pipe closed on one end that will have a fundamefuzhmefrlpj bv-o:dx 12o*7yy89 l) 6ntal frequency 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. $4.12 \; m$
