Consider the following functions:1. \(\frac{{\left( {{s^2} + 1} \right)\left( {{s^2} + 3} \right)}}{{s\left( {{s^2} + 2} \right)}}\)2. \(\frac{{s\left( {{s^2} + 1} \right)\left( {{s^2} + 3} \right)}}{{\left( {{s^2} + 0.5} \right)\left( {{s^2} + 2} \right)}}\)3. \(\frac{{\left( {{s^4} + 4{s^2} + 3} \right)}}{{{s^2} + 2s}}\)4. \(\frac{{{s^5} + 4{s^3} + 3s}}{{{s^4} + 2.5s + 1}}\)Which of the above function are LC driving point impedances?

• A. 1, 2, 3 and 4
• B. 2 and 3 only
• C. 1 and 2 only
• D. 3 and 4 only