The following are the shooting instructions of glassware, the correct method is

A、Shooting on a white background, it is necessary to use a black flag to add a dark outline of glass.
B、Shooting on a white background, it is necessary to use a white reflector to highlight the outline of glassware.
C、Shooting on a black background, the white reflector can highlight the glass.
D、Shooting on a black background, the black flag can highlight the glass.