Which of the following are the characteristics of extraction process?
1. Faster speed of production
2. Good surface finish
3.Dimensions can be maintained with close tolerances
4.Mechanical properties of the extruded products are inferior to that of the rolled products
Select the correct answer using the codes given below
(a) 1 and 2 (b) 1, 2 and 3 (c) 3 and 4 (d) 1 and 4