Which of the following components can be manufactured by powder metallurgy methods?
1. Carbide tool tips 2. Bearings
3. Filters 4. Brake linings
Select the correct answer using the codes given below:
(a) 1,3 and 4 (b) 2 and 3
(c) 1,2 and 4 (d) 1,2,3 and 4