You are approaching another vessel and see that she has the signal flag "J" hoisted. What should you do?

A
Keep well clear of the vessel because she is on fire and has dangerous cargo on board or she is leaking dangerous cargo.
B
Attempt to call the vessel on VHF radiotelephone because she is requesting to communicate.
C
Approach the vessel with caution because she is dragging her anchor.
D
Proceed on present course and speed since the vessel is requesting a tug.
E