Answer:
c and d
Step-by-step explanation:
-Study the two bar graphs. Based on these graphs, which of the following statements are correct? Check all the boxes that apply.
-The United States always built the most aircraft.
Germany built fewer aircraft in 1944 than it did in 1939.
-Japan built more aircraft than the United States in 1939.
-All three countries increased the number of aircraft they built between 1939 and 1944.