A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.

A.dead-reckoning position
B.fix B.estimated position
C.probable position
D.running fix

A.walk the stern to starboard in reverse
B.walk the stern to port in reverse
C.run faster than a lefe-handed propeller
D.right itself if capsized

A.a heavy anchor with an extra long line used to anchor in deep water
B.a cone shaped bag used to slow down the wind drift effect
C.a padeye to which the sea painter is made fast
D.made of wood if it is an approved type