A student solved the problem shown below.



Find −3(−6)(−4)−(−9) (18)(−4)−(−9)==(−72)−(−9)81
This student made a mistake when solving the expression. Choose the mistake the student made.



Multiple choice question.

A)
The student subtracted 9 instead of adding its additive inverse.


B)
The student made 18 as a positive instead of a negative number.


C)
The student made 72 a negative number instead of a positive number.


D)
The student multiplied 18 by -4 before subtracting -9 instead of subtracting -9 from -4 before multiplying by 18.