You must change the design for an old sieve tray column with 12 -inch tray spacing to operate at a new reflux ratio which is (5)/(3) of the reflux ratio in old design (R(new )=(5)/(3)× R(old ))
A) Increase the number of trays.
B) Decrease the tray spacing.
C) Maintain the same reflux ratio.
D) Change the column material
