| According to 46 CFR, Subchapter J (Electrical Engineering), which of the following statements concerning battery installations is correct? |
| A) Power and lighting batteries must be of the lead-acid type only. |
| B) When power ventilation is required, the ventilation may be accomplished by a ventilation system that serves other spaces. |
| C) When power ventilation is required, blower blades must be nonsparking and the system must be interlocked with the battery charger to prevent simultaneous operation. |
| D) When power ventilation is required, blower blades must be nonsparking and the system must be interlocked with the battery charger to prevent charger operation unless the ventilation fan is running. |
