In the relatively calm area near the hurricane center，the seas are（）.

A.moderate but easily navigated

B.calm

C.mountainous and confused

D.mountainous but fairly regular as far as direction is concerned

商业汇票贴现时，实付贴现金额按票面金额扣除贴现日至汇票到期（）利息。

A.前一日的

B.当日的

C.后一日的

D.前二日的