If A is an m × n matrix such that AB and BA are both defined, then B is a
A. m × n matrix
B. n × m matrix
C. n × n matrix
D. m × n matrix
Answer:B
If A is an m × n matrix such that AB and BA are both defined, then B is a
A. m × n matrix B. n × m matrix C. n × n matrix D. m × n matrix