The free electrons in a metal follow the kinetic theory of gases and the following statements are made about their properties:1. The velocity of all the electrons is equal.2. The electrons have a velocity distribution ranging from zero to infinity.3. The average velocity of electron gas is proportional to \(\sqrt{T}\) (T = temperature).4. The maximum velocity of electrons is proportional to T.Which of these statements are correct?

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