Which of the Following Represents the Correct Sequence for Creation

Which of the following represents the correct sequence for creation of a casting using the lost wax technique?
1) The pattern and sprue are encased in an investment ring.
2) A wax or plastic sprue is attached to the pattern.
3) A wax pattern of the restoration is carved on the die.
4) The enclosed pattern and sprue are heated in a burnout oven at high temperatures.

A) 3,1,2,4
B) 3,2,1,4
C) 2,3,1,4
D) 3,2,4,1