Mass flow ratio of NH3 in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of___________________?
A. 1 : 1
B. 1 : 9
C. 9 : 1
D. 1 : 3
E. 3 : 1
A. 1 : 1
B. 1 : 9
C. 9 : 1
D. 1 : 3
E. 3 : 1