Is Appropriate for a Helicopter Approaching an Airport for Landing

Multiple Choice

is appropriate for a helicopter approaching an airport for landing?

A) Remain below the traffic pattern at about 500 feet AG and from the opposite side of the traffic flow
B) Flow with fixed wing aircraft
C) Approach under fixed wing but on the same side as their normal traffic pattern.
D) Approach the airport from the departure end of the runway so taking off fixed wing aircraft can see and avoid