Consider the following statements in a semiconductor crystal
1. As temperature increases lattice scattering increases.
2. Lattice Scattering is directly proportional to Doping levels.
3. As temperature increases mobility due to ionized impurity scattering increases.
4. As doping increases mobility due to ionized scattering decreases scattering events decreases.
Which of the following statements are correct?

A. 1, 2 and 4

B. 2 and 4

C. 1, 2 and 3

D. 1 and 3

Answer: Option D