5. What will be displayed when this program finishes running?
var numbers List = [20, 10, 5]
appendItem(numbersList, 50)
appendItem(numbersList, 100)
removeItem(numbersList, 1)
insertItem(numbersList, o, 30)
console.log(numbersList.length)
A. 3
B. 6
C. 7
D. 5