Students of two sections A and B of a class show the following results in a test conducted for 100 marks.
\begin{array}{|l|c|c|}
\hline & Section A & Section B \\
\hline Number of students & 50 & 60 \\
\hline \begin{array}{l}
Average marks in the \\
test
\end{array} & 45 & 45 \\
\hline \begin{array}{l}
Variance of distribution \\
of marks
\end{array} & 64 & 81 \\
\hline
\end{array}
Then

1. A variability of section \(B>\) variability of section \(A\)
2. B variability of section \(A>\) variability of section \(B\)
3. C variability of section \(A=\) variability of section \(B\)
4. D The data is not sufficient to compare the variability of the sections