don't need to explain the answer just tell me the correct option.

Which of the following statements is true? I. ani+vnani=1 II. ani=sni when d=0 III. anti=a3i+vnsn3i for n>3 A. I and II only B. I and III only C. II \& III only D. II only E. I, II, and III What is (a1iaiaii)/(id) when i=5% ? A. Over 64,000,000 B. About 2,000,000 C. About 8,000 D. 1.00 E. Close to zero When i=50%, what is ai/ai ? A. 1/2 B. 2/3 C. 3/4 D. 4/5 E. 3/2 Which of the following statements is true? I. ani+vnani=1 II. ani=sni when d=0 III. anti=a3i+vnsn3i for n>3 A. I and II only B. I and III only C. II \& III only D. II only E. I, II, and III What is (a1iaiaii)/(id) when i=5% ? A. Over 64,000,000 B. About 2,000,000 C. About 8,000 D. 1.00 E. Close to zero When i=50%, what is ai/ai ? A. 1/2 B. 2/3 C. 3/4 D. 4/5 E. 3/2