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15.3 Homework Question 14, 5.3.85 > Use Cramer's rule to solve the system of equations. If D =0, use another method to determine the solution K x + 3y = 20 4x + 8z = 10 -y-z = 1 Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. There is one solution. The solution set is {(. (Type integers or simplified fractions.) O B. There are infinitely many solutions. The solution set is { (. ,z) }, where z is any real number (Simplify your answers. Use integers or fractions for any numbers in the expressions.) O C. There is no solution. The solution set is @