The value of H on the surface of earth is of the order of ___________

Question

$\begin{array}{1 1} 3.2 \times 10^{-4}\;T \\ 3.2 \times 10^{-5}T \\ 3.2 \times 10^4 \;T \\ 3.2 \times 10^5 \;T \end{array}$