What is the correct combination of refrigerants?
| a | R-11 | I | Centrifugal compressor & large capacity system |
| b | R-12 | II | Reciprocating compressor & small capacity system |
| c | R-502 | III | Frozen food |
| d | R-718 | IV | Steam ejector |
1
a - I, b - II , c- IV, d - III
2
a- II, b - I, c - IV, d - III
3
a - I, b - II, c - III, d - IV
4
a - II, b -I, c -Ill, d - IV