Label each statement according to whether it refers to AC, DC, both, or neither.a. The current is always constant in these types of circuits. b. The current in this type of circuit travels in the same direction at all times. c. This type of current is harmless. d. This is the type of current that runs from a far away power plant to your home. e. The battery in a laptop computer delivers this type of current. 220 V at 60 Hz specifies this type of power supply.