very lost plz help

3) Which of the following statements is true regarding the degree of operating leverage (DOL) is correct? -an increase in fixed costs with no other changes, will result in a decrease in the degree of operating leverage -a decrease in operating income will result in a decrease in the degree of operating leverage - an increase in fixed costs with no other changes, will result in an increase in the degree of operatingi leverage - an increase in operating income will have no impact on the degree of operating leverage