Which of the following are characteristics of a series circuit? I. The current that flows through each resistance is the same as the total current throughout the circuit. II. The sum of all the individual voltage drops in the same as the applied voltage. III. The reciprocal of the total resistance is equal to the sum of the reciprocal of the separate resistances. IV. The voltage drop in each resistance is the same as the magnitude of the applied voltage.

• A. I and II only
• B. I and III only
• C. III and IV only
• D. I, II, and III only