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What are the safety precautions or methods while using computer? Select the correct statements:

1. Always fully shut down and unplug the computer.

2. Don't ever try to clean any part of your system unit with any liquid detergents or cloths.

3. When making cabling connections of any kind don't pressure or never excessive force.

A)  1 and 3 are correct               

B)  2 and 3 are correct

C)  1 and 2 are correct               

D)  All are correct

E)  None of these