At What Temperature Would the Root Mean Square Speed of Oxygen

Multiple Choice

At what temperature would the root mean square speed of oxygen molecules, $\mathrm { O } _ { 2 }$ be 14.0 m/s if oxygen behaves like an ideal gas? The mass of one $\mathrm { O } _ { 2 }$ molecule is $5.312 \times 10 ^ { - 26 } \mathrm {~kg}$
Boltzmann constant is $1.38 \times 10 ^ { - 23 } \mathrm {~J} / \mathrm { K }$

A) 2090 K
B) 0.251 K
C) $1.52 \times 10 ^ { 23 } \mathrm {~K}$
D) 6270 K