Please solve this

157. Let A be a 3x3 matrix and consider the system of equation 1 Ax =| 0 Then, -1 (a) if the system is consistent, then it has a unique solution. (b) if A is singular, then the system has infinitely many solution (c)if the system is consistent, then the |Al#0 (d) if the system has a unique solution, then A is non-singular