If you were asked to assess the most successful aspect of Stalin'S first five-year plan (1928-1933), which statement might you give as your answer? (1 point)

A. • The plan successfully expanded the Soviet Union's capacity for light industry, producing the appliances, textiles, and household furnishings that improved the everyday lives of Russian consumers.
B. The plan successfully expanded the Soviet Union's financial sector, turning the country into a banking center for Eastern Europe and providing it with the foreign investment needed for further development.
C. The plan successfully expanded the Soviet Union's agricultural output, ending famine and providing a more nutritious diet for citizens across the country.
D. The plan successfully expanded the Soviet Union's capacity for heavy industry, allowing it to produce the tractors, tools, and machinery needed for further industrialization.

D. The plan successfully expanded the Soviet Union's capacity for heavy industry, allowing it to produce the tractors, tools, and machinery needed for further industrialization.