A loan of 4000 Euros will be repaid in 12 years, with 12 annual installments (each installment at the end of the year), with (ATTENTION) interest rate of 7% per year and monthly interest. The first 11 installments are equal and equal to 380 Euros each, the last (the 12th) is different. 1A (4%) What is the substantial interest rate of the loan. 1B (10%) What is the amount of the last installment. 1C (6%) You analyzed the first 3 installments in interest and repayment of capital.