Pick out the wrong statement?

A. In a sieve tray, the minimum hole diameter is equal to the tray thickness

B. In practical operation, distillation towers having diameter 3-6 metres equipped with bubble cap (round) size of 15 cms are used

C. In a stainless steel sieve tray, the minimum hole diameter is equal to 10 times the plate thickness

D. Height of packing in a packed tower is about 3 times the column diameter for raschig rings and about 5 to 10 times the column diameter for saddle packing

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