—What do you think of his advice?

—What he said sounded ______, I think. [ ]

A. quite perfectly

B. nice and helpful  

C. very clearly

D. polite or friendly

申请在港口水域外特定海域从事多航次危险货物过驳作业的，申请人应当提前多少天向海事管理机构提出书面申请。