Which of the following statements are correct?
1. A boring machine is suitable for a job shop
2. A jig boring machine is designed specially for doing more accurate work when compared to a vertical milling machine.
3. A vertical precision boring machine is suitable for boring holes in cylinder blocks and linear.
(a) 1,2 and 3 (b) 1 and 2
(c) 2 and 3 (d) 1 and 3