The small lamp voltage in Figure A is 3.5 volts, while the sliding rheostat voltage in Figure B is 3.5 volts.

Because "the slider of the rheostat in Xiaohua circuit is near the midpoint position", the resistance of the sliding rheostat at this time is about 10 ohm or 25 ohm.

Multiply the ammeter of 0.24 amp by 10 ohm or 25 ohm respectively, and the voltage of the sliding rheostat is about 2.4 volts or 6 volts, which is not consistent with Figure B.

So picture A is a small flower and picture B is Xiao Ming.