Consider the following statements
The nozzle efficiency depends on
1. Material of the nozzle
2. Size and shape of the nozzle
3. Mach number of the nozzle
4. Reynolds number of flow
Which of these statements are correct?
(a) 1 and 2 only (b) 1 and 3 only (c) 1, 2 and 4 (d) 2, 3 and 4