What is the practical difference between a hardwired EVSE and a receptacle-based EVSE?

What is the practical difference between a hardwired EVSE and a receptacle-based EVSE?

• A. A hardwired unit is permanently connected with a disconnect; a receptacle-based unit uses a plug for detachable cables
• B. A hardwired unit requires no grounding; a receptacle-based does
• C. A hardwired unit is always portable; a receptacle-based is fixed
• D. A hardwired unit cannot be used outdoors; a receptacle-based can

Answer: (A)