Which of the following statements are correct for temperature rise in metal cutting operation? 1. It adversely affects the properties of tool material.
2. It provides better accuracy during machining.
3. It causes dimensional changes in workpiece and affects accuracy of machining.
4. It can distort the accuracy of machine tool itself.
(a) 1 and 2 (b) 2 and 3
(c) 3 and 4 only (d) 1, 3 and 4