Which of the following mechanisms are suitable for indexing the table of rotary transfer line?
1.Rack and pinion
2. Ratchet and pawl
3. Lead screw
4. Geneva mechanism
Select the correct answer using the codes given below
(a) 1,2 and 3 (b) 2, 3 and 4 (c) 1, 3 and 4 (d) 1, 2 and 4