If in doubt whether an aircraft is a C or a D, look at its fuselage and tail. D aircraft had a longer tail with a dinghy inside (and many times it is possible to see a thin release cable channel running along the fuselage up to it on the port side.
If you can't see the tail or the fuselage, then take a look under its wings. If there is a drop tank or connections for one, again it is D. Both details can be spotted in the decorated aircraft, so it is most probably a D.
Note that the aircraft has a letter G on its nose ? I do not know how many Bf110 Staffeln operated with St. G. 1 but this would make it A5 + GB ... ( ? )
Note what appears to be a rearward-firing MG in the lower image beneath the Balkenkreuz.
thanks to Fernando and Stephen for additional text commentary
on offer here
Below; 'A5+BB' via EV and FE posting on FB
