A distorted sinusoidal has the amplitudes A1, A2, A3 ... of the fundamental, second, harmonic third harmonic, ... respectively. The total harmonic distortion is

• A. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/335-542-1.png">
• B. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/335-542-2.png">
• C. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/335-542-3.png">
• D. <img src="/_files/images/electronics-and-communication-engineering/analog-electronics/335-542-4.png">