Observe the following statements about dry cell I. It is a primary battery. II. Zinc vessel acts as cathode. III. A paste of moist $\mathrm{NH}_4 \mathrm{Cl}, \mathrm{MnO}_2$ and $\mathrm{ZnCl}_2$ is present between two electrodes. IV. The potential of this cell is 1.5 V . The correct statements are

• A

  I, II, III, IV
• B

  I, II, III only
• Correct answer
  C

  I, III, IV only
• D

  II, III, IV only

Hence, the correct answer is option: 'C'.