A $120 - \Omega$ Laboratory Resistor Is Rated At $0.25 \mathrm {~W}$

A $120 - \Omega$ laboratory resistor is rated at $0.25 \mathrm {~W}$ . How much current can safely flow through the resistor?

A) $22 \mathrm {~mA}$
B) $30 \mathrm {~A}$
C) $46 \mathrm {~mA}$
D) $2.1 \mathrm {~mA}$