Answer:
B
Step-by-step explanation:
Given
[tex]\left[\begin{array}{ccc}3&2\\-4&6\\7&5\end{array}\right][/tex] - [tex]\left[\begin{array}{ccc}-1&0\\5&2\\4&9\end{array}\right][/tex]
Subtract corresponding elements to obtain difference, that is
[tex]\left[\begin{array}{ccc}3+1&2-0\\-4+5&6-2\\7-4&5-9\end{array}\right][/tex]
= [tex]\left[\begin{array}{ccc}4&2\\1&4\\3&-4\end{array}\right][/tex] → B
