If A is a matrix of order m × n and B is a matrix such that AB’ and B’A are both defined, then the order of matrix B is
A. m × m
B. n × n
C. n × m
D. m × n
Answer:D
If A is a matrix of order m × n and B is a matrix such that AB’ and B’A are both defined, then the order of matrix B is
A. m × m B. n × n C. n × m D. m × n