A TV transmission tower has a height of $240 \;m$ signal broad cast from this will be received by LOS Communication at a distance of (assume the radius of earth to be $6.4 \times 10^6 \;m)$

Question

$\begin{array}{1 1} 100\;km \\ 24\;km\\ 55\;km \\ 50\;km \end{array} $