You want to find all orders that don't have the pepperoni string in the file named pizza-orders.txt. Which of the following options of the grep command will you use to accomplish the task?
A. grep -v "pepperoni" pizza-orders.txt
B. grep -i -v "pepperoni" pizza-orders.txt
C. grep -w -v "pepperoni" pizza-orders.txt
D. grep -x -v "pepperoni" pizza-orders.txt