Nino Hernandez,    who ________ only 10kg and is regarded as the world's shortest living man,    

has not grown since he was 2 years old. [ ]

A. weighed          

B. had weighed      

C. weighs           

D. has been weighed

具有首柱和舵柱的船舶，沿满载水线自首柱前缘量至舵柱后缘的长度即为船舶的（）。