KMAR Company manufactures and sells mountain bikes. It normally operates eight hours a day, six days a week. Using this information, classify each of the following costs as fixed or variable. If additional information would affect your decision, describe the information.
a. Incoming shipping expenses
b. Office supplies
c. Depreciation on tools
d. Taxes on property
e. Bike tires
f. Gas used for heating
g. Bike frames
h. Direct labor
i. Screws for assembly
j. Repair expense for tools
k. Management salaries