Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?

A. Weir length for a bubble cap plate is the same as that for the sieve plate

B. Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the

C. The downcomer design and the residence time in the downcomer is almost same for sieve

D. ve plate

E. te and bubble cap columns