Amongst $\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{~S}, \mathrm{H}_2 \mathrm{Se}$ and $\mathrm{H}_2 \mathrm{Te}$, the one with the highest boiling point is
(A) $\mathrm{H}_2 \mathrm{O}$ because of hydrogen bonding
(B) $\mathrm{H}_2$ Te because of higher molecular weight
(C) $\mathrm{H}_2 \mathrm{~S}$ because of hydrogen bonding
(D) $\mathrm{H}_2 \mathrm{Se}$ because of lower molecular weight