Which statement concerning maneuvering in restricted visibility is FALSE?（）.

A.A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam shall reduce her speed to bare steerageway

B.A vessel which hears a fog signal forward of her beam shall stop her engines

C.A vessel which hears a fog signal forward of the beam shall navigate with caution

D.If a vessel determines by radar that a close-quarters situation is developing，she shall take avoiding action in ample time