When in command of a lifeboat under oars, the command "Toss oars" means to ___________________.

A
lift oars to vertical position, trim blades fore and aft with handles resting on the thwarts
B
complete the stroke, come to "Oars", raise the oars smartly to the vertical, rest handles on footings and trim blades fore and aft
C
place oars in row locks directly from the boated position or from "Stand by oars" position
D
complete the stroke (when rowing in ahead motion), raise the oars with crook of elbow to about 30 degrees, swing blades forward
E