A student is performing an experiment using a resonance column and a tuning fork of frequency 244 s-1. The student is told that the air in the column is replaced by another gas. If the minimum height at which the resonance occurs is (0.350 ± 0.005)m, then the gas in the tube is

(a) Oxygen
(b) Nitrogen
(c) Neon
(d) Argon

Answer: (d) Argon