Fly Ash

Consider the following statements with reference to the Fly ash:

  1. Fly ash is a byproduct from burning pulverized coal in electric power generating plants.
  2. It consists primarily of oxides of silicon, aluminum iron and calcium.
  3. There are two common types of fly ash: Class D and Class H.

Which of the statement(s) given above is/are correct? Choose the correct answer from the codes given below:

A
1 and 2
B
2 and 3
C
1 and 3
D
1, 2 and 3
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