Q: Consider the following statements: Energy balances are fundamental for energy planning, since they allow analysing aspects such as: 1. distribution of final energy consumption per end-use sector. 2. storage and refinement of each fuel or group of energies in the matrix. 3. self-sufficiency in energy, foreign dependence and foreign trade. 4. efficiency in processes for transforming primary energy into secondary. Which of the above statements is/are NOT correct?