Calculate the reactance of a 120.0 mH long coil of wire connected to a 350.0 Hz AC power supply. 

• A. X_L = 42.0 Ω
• B. X_L = 65.9 Ω
• C. X_L = 84.0 Ω
• D. X_L = 263.9 Ω

Answer: (D)