The resistance of the filament of an electric bulb changes with temperature. If an electric bulb rated 220 volt and 100 watt is connected \[(220\times .8)\] volt sources, then the actual power would be [CPMT 1989]

• A.                    \[100\times 0.8\,watt\]
• B.                    \[100\times {{(0.8)}^{2}}watt\]
• C.                    Between \[100\times 0.8\]watt and 100 watt
• D.                    Between \[100\times {{(0.8)}^{2}}watt\] and \[100\times 0.8\]watt