The correct answer is the option B.To solve this problem you must apply the proccedure shown below:
1. You have the following expression:
(11-7i)-(16-11i)
2. If you want to substract both terms, you need to substract the real numbers and the complex numbers. Then, you obtain:
11-7i-16+11i
(11-16)+(-7+11)
3. Then, you obtain the following result:
-5+4i
4. Therefore, as you can see, the correct answer is the second option (option B), which is:
B. -5+4i
