Consider the following operations of a universal dividing head in a milling machine:
1. It sets the work piece in a desired position in relation to the machine table.
2. After each cut it rotates the job through a desired angle.
3. It provides a continuous rotary motion to the job during milling of helical grooves.
Which of these statements is/are correct?
(a) 1, 2 and 3 (b) 1 only
(c) 1 and 2 only (d) 2 and 3 only