Which of the following best describes the application of venin's theorem in circuit analysis?
A) Venin's theorem simplifies a complex network to a single voltage source and series resistance.
B) Venin's theorem states that energy cannot be created or destroyed, only transferred or transformed.
C) Venin's theorem describes the relationship between pressure, volume, and temperature in gases.
D) Venin's theorem is used to calculate the gravitational force between two masses.