The resistance of the filament of an electric bulb changes with temperature. If an electric bulb rated 220 volt and 100 watt is connected `(220 xx 8)` volt sources, then the actual power would be
A. `100 xx 0.8`W
B. `100 xx (0.8)^(2)` W
C. Between `100 xx 0.8` W and `100 xx 0.8` W
D. Between `100 xx (0.8)^(2)` W and `100 xx 0.8`W