Consider the following statements with respect to the relief angle of cutting tool:
1. This affects the direction of chip flow.
2. This reduces excessive friction between the total and work piece
3. This affects tool life
4. This allows better access of coolant to the tool-work piece interface
Which of the statements given above are correct?
(a) 1 and 2 (b) 2 and 3
(c) 2 and 4 (d) 3 and 4