Consider the following statements regarding electrical properties of ceramic materials:
1. They are practically non-conductors at lower temperatures.
2. Ordinary glass and silicates in molten state are dependable as electrical non-conductors.
3. They offer high resistance to current transmission and get heated soon when conducting electric current.
Which of the above statements are correct?

A. 1 and 2 only

B. 1 and 3 only

C. 2 and 3 only

D. 1, 2 and 3

Answer: Option B