$52)$ Since the Helium molecule $($He$)$ is $2$ times as massive as the Hydrogen molecule $(),$ the speed of

sound in Hydrogen is $\_\_\_\_\_\_\_\_$ the speed in Helium. $52)\_\_\_\_\_\_$

A$)$ two times

B$)1\mathrm{.}41$ times

C$)1/$ times

D$)$ eight times

E$)$ four times