XYZ Company reported the following cost information: June July Cost A $16,380 $21,560 Cost B $55,440 $89,080 Cost C $37,380 $37,380 Units sold 42,000 units 68,000 units which of the above costs would be classified as a mixed cost? O Cost A OCost B O Cost C Both Cost A and Cost B are mixed costs all of the above costs are mixed costs none of the above costs are mixed costs