b
Frequency of tuning fork.

\(n=264 \mathrm{Hz}\)

Length of column \(L=?\)

For closed organ pipe

\(n=\frac{v}{4l}\)

\(\Rightarrow l=\frac{v}{4 n}=\frac{330}{4 \times 264}=0.3125\)

or, \(l=0.3125 \times 100=31.25 \mathrm{cm}\)

In case of closed organ pipe only odd harmonics are possible.

Therefore value of \(l\) will be \((2 n-1) l\) 

Hence option \((b)\) i.e. \(3 \times 31.25=93.75 \mathrm{cm}\) is correct