Consider the following statements
1. Gases are considered incompressible when Mach number is less than 0.2
2. A Newtonian fluid is incompressible and non – viscous
3. An ideal fluid has negligible surface tension
Which of these statement(s) is/are correct?
(a) 2 and 3 (b) 2 alone (c) 1 alone (d) 1 and 3