While your vessel is docked port side to a wharf，a sudden gale force wind causes the vessel’s stern lines to part. The stern begins to fall away from the dock，and no tugs are immediately available. Which measure(s) should you take FIRST?（）
- ANotify the engineroom of the need for propulsion
- BShut down any cargo transfer that's in progress
- CLet go the port anchor and veer to a short scope of chain
- DObtain assistance from the terminal to put new stern lines out