10. The population y in the year x of the counties listed is approximated by the given equations, where x = 10 corresponds to 2010 and y is i thousands. Solve this system of equations, and interpret the answer. County A: County B: -x+20y=67 -x+10y = 27 County C: y = 4 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. OA. The system has exactly one solution. The solution is (Type Integers or fractions.) OB. The system has infinitely many solutions of the form (Type Integers or fractions.) OC. The system has no solution. y), where y is any real number. What does the answer represent? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. OA. All three counties had the same population of OB. Two counties had the same population of in the year in the year C. There will be infinitely many times when the three counties will have the same population. OD. There will never be a time when all three counties have the same population.