【单选题】 The wind is ESE，and a sailing vessel is steering NW. Which fog signal should she sound?【】（技能鉴定,其他技能,海船船员证题库）

【单选题】 The wind is ESE，and a sailing vessel is steering NW. Which fog signal should she sound?【】

AOne blast at one-minute intervals

BOne blast at two-minute intervals

CTwo blasts at one-minute intervals

DOne prolonged and two short blasts at two-minute intervals