Question

Consider the following elements

1. Nose radius                     

2. Cutting speed

3. Depth of cut

4. Feed

The correct sequence of these elements in DECREASING order of their influence on tool life is

(a) 2,4,3,1                       (b) 4,2,3,1

(c) 2,4,1,3                    (d) 4,2,1,3