Answer:
B. The amount you spend on variable expenses changes from month to month.
Explanation:
A variable expense is an expense which is bond to fall or rise in its totality given the status of factors such as; a change in the total sales, change in the ammount of supply or production.
Hense, this ammount is bond to change from time to time.
Some examples of variable expenses include; Labor, expense of raw materials, e.t.c
The expenses which are fixed are known as fixed expenses, they do not change. Some examples are; Insurance, rent and such like expenses.