Consider the following statements:In shell moulding1) a single parting plane should be provided for mould2) detachable pattern parts and cores could be included3) minimum rounding radii of 2.5 mm to 3 mm should be used4) draft angles of not less than 1° should be usedWhich of the above statements are correct?

Consider the following statements:In shell moulding1) a single parting

1.	Consider the following statements:In shell moulding1) a single parting plane should be provided for mould2) detachable pattern parts and cores could be included3) minimum rounding radii of 2.5 mm to 3 mm should be used4) draft angles of not less than 1° should be usedWhich of the above statements are correct?
A.	1, 3 and 4 only
B.	1, 2 and 3 only
C.	2, 3 and 4 only
D.	1, 2, 3 and 4
Answer» B. 1, 2 and 3 only