What turned the tide against the German U-boats menace in the Atlantic? * A- Bring merchant ships into convoys, with protection from warships and development of
air born radars.
B- The construction of massive ice aircraft carriers to provide cover across the entire
Atlantic Ocean.
C- Congress approved the construction of the transcontinental railroad line, which
shipped goods to the Pacific.
D- Submersible freighter, which could avoid detection by German U-boats.