q6 just looking for the answers

Safari File Edit View History Bookmarks Window Help $ 100% [27 Thu 11:27 AM Q E . . . G mathway.com Course Hero X Mathway | Algebra Problem Solver + =Algebra ... 7 8 S In -10 H 2 y 4 5 6 V X log log U 2 2 3 abc 0 % = X Use Gaussian elimination to find the complete solution to the following system of equations, or show that none exists. -x+ y+ z= -4 - x + 5y - 15z = -24 5x - y - 21z= 0 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 {( . . D). (Simplify your answers.) B. There are infinitely many solutions. The solution set is