Out of the three molecules $XeF_4, SF_4\; and \;SiF_4$ one which has tetrahedral structures is

Question

$\begin{array}{1 1} a)All\; of \;three \\ b) Only \;SiF_4\\ c)Both\;SF_4\;and\;XeF_4 \\ d)Only\;SF_4\;and\;XeF_4 \end{array} $