Which of the diode circuit shows correct biasing used for the measurement of dynamic resistance of p-n junction diode:

Dynamic resistance of a p-n junction diode is measured only in its forward-biased state, where the positive terminal of the DC source connects to the p-side and the negative terminal connects to the n-side.

Option A: The circuit uses an AC source instead of a steady DC biasing source required to set the operating point.
Option B: The positive terminal of the 5V DC battery connects to the n-side of diode $$D_1$$, resulting in reverse biasing.
Option C: The positive terminal of the 5V DC battery connects to the p-side of diode $$D_2$$, resulting in correct forward biasing.
Option D: The battery connections show the long line (positive terminal) connected to the n-side, resulting in reverse biasing.