5. 矩阵[0 2 -3 1]
[0 3 -4 3]
[0 4 -7-1]的行最简形矩阵是( )(本题2.0分)

A、 [1 0 0 0]
[0 1 0 0]
[0 0 0 0]

B、 [1 0 0 5]
[0 1 0 3]
[0 0 0 0]

C、 [0 1 0 5]
[0 0 1 3]
[0 0 0 0]

D、 [0 1 0 0 ][0 0 1 0][0 0 0 0]