Question: Which guidelines must staff consider when using battery-operated equipment with a sling? Need Assignment Help? Select one: a. The equipment and sling must be serviced and safe to use, the battery must be fully charged, and the sling must be detached when the patient is in transit. b. The equipment and sling must be serviced and safe to use, the battery must be fully charged, and there must be no clinical contraindications with the patient. c. The equipment must be serviced regularly, the sling should be in reasonable condition, and the battery should be charged the day before.