A mixture of 2 moles of helium gas (atomic mass = 4 amu) and 1 mole of argon gas (atomic mass = 40 amu) is kept at 300 K in a container. The ratio of the rms speeds
$$\left(\frac{v_{rms}(helium)}{v_{rms}(argon)}\right)$$

A

0.32

B

0.45

C

2.24

D

3.16