Germany's financial support of Saretec, to finance the building of a wind turbine tower, rooftop solar panels and storage batteries, constitutes a(n) O a. withdrawal from the circular flow of income and spending in the economy of Germany O b. withdrawal from the circular flow of income and spending in the economy of South Africa O c. direct portfolio investment in South Africa's energy transition by the German government O d. reduction of total expenditure from the circular flow of income and spending in the economy of South Africa