[单选题]
The fundamental frequeqnm;)l.-f(r2h a -ys yv mkr(u(4jwvegpm pbtv om0q:-:*th+t n1h6tk) ys1i ncy in a pipe closed at one end is 330 Hz. What is the frequency 0o1ktvmh6q1ns : pytp b)t i-*h mtg:+of the third harmonic?
A. $110 \; Hz$
B. $220 \; Hz$
C. $660 \; Hz$
D. $990 \; Hz$