Consider the following statements
1. In Freon 22 system, moisture choking generally does not occur
2. Freon 11 is mainly used in large capacity air – conditioning plants with centrifugal compressors
3. Presence of lubricating oil in evaporator will increase the heat transfer coefficient
4. Refrigerants that are completely miscible with oil do not cause oil choking
Of these statements
(a) 1, 2 and 3 are correct
(b) 1, 2 and 4 are correct
(c) 2, 3 and 4 correct
(d) 1, 3 and 4 are correct