does anyone know the answer to these questions?

One of the possible reasons for the material quantity variance could be the purchase of low- quality material. Select one: O True O False ~ Unfavorable labor rate variance may arise if a department has deployed more skilled workers and less unskilled workers for manufacturing a job. Select one: O True 7 O False A responsibility center for controlling revenues and costs is called a revenue center Select one O True O False en Segment is a department of a business, like production, purchase, stores, accounts, sales etc. Select one: O True O False In a manufacturing department it was observed that machine efficiency was less than expected. This is apt to hold the department head responsible for not using the machines properly Select one O True O False