One Mole of Hydrogen Gas (Molar Mass = 2 $\times$ 10³ M/s

Multiple Choice

One mole of hydrogen gas (molar mass = 2.0 g/mol) has an rms velocity of 2.0 $\times$ 10³ m/s.To what temperature on the Celsius scale does this correspond?

A) 4.8 $\times$ 10⁴
B) 3.2 $\times$ 10²
C) 3.2 $\times$ 10⁵
D) 48
E) 69