Shan Zengji took a photo of the electric energy meter at home, as shown in the figure. After carefully observing the photos, he came to the following conclusion. What do you think is right (

A, this kind of watt-hour meter should be used in 220 volt circuit; So a is incorrect;

B, the maximum current is 10A, so the maximum power allowed to access is p = UI = 220v×10a = 2200w; So, B is wrong;

C, connected to the electrical appliances on the watt-hour meter, every consumption of 1 kwh, the indicator light on the watt-hour meter flashes 3200 times, so c is correct;

D, the index should be 7624. 1kW? H, so d is not correct.

So choose C.