The iconic 1942 wartime poster "Rosie the Riveter," created by J. Howard Miller, is best known for its depiction of which of the following themes?
A) The importance of maintaining traditional gender roles during wartime.
B) The role of women in supporting the war effort by working in industrial jobs.
C) The need for increased military enlistment among young men.
D) The promotion of conservation and rationing of food supplies.