Business Accounting questions. Thank you for your help!

For the following costs below in 4) to 6), indicate whether it is (A) variable or (B) fixed with respect to the goods and services produced by the organiziation. 4) Insurance on the finished goods warehouses 5) Microchips used in producing calculators 6) Shipping costs on merchandise sold 7) When the level of activity increases within the relevant range, how does each of the following change? VariableFixed cost cost per umit per mit A) Increases Increases B) No change Increases C) No change Decreases D) Increases Decreases